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Marine Life: Most Popular Articles

These articles are the most popular over the last month.
10 Surprising Facts About Starfish
Starfish - sea stars - are marine invertebrates that are a variety of colors, shapes and sizes, although all resemble a star. Starfish are familiar marine animals and fascinating creatures. Here are 10 facts about starfish, including one about how they are not actually a fish.
Types of Whales
There are about 86 species of cetaceans - whales, dolphins and porpoises in the Order Cetacea, which is further divided into two sub-orders, the Odontocetes and the Mysticetes. Learn about and see photos of featured cetacean species.
What Causes a Killer Whale's Dorsal Fin to...
Learn why a killer whale - orca's - dorsal fin collapses, or flops over, when it is in captivity.
Do Sharks Lay Eggs?
Do sharks lay eggs? Here you can learn about ways sharks reproduce, including whether they lay eggs or give birth to live young.
10 Facts on How Scallops Live, Feed, and...
Facts about scallops. Learn about where scallops live, how big they grow, what they eat and how they reproduce. When you eat a scallop, what part are you actually eating?
Weird, Wild Wobbegong Sharks
In this slideshow, learn about the weird-looking wobbegong sharks. This slide features an introduction to this shark group.
What Is a Biological Adaptation?
An adaptation is a physical or behavioral characteristic that has developed to allow an organism to better survive in its environment.
10 Fascinating Facts About Seahorses
Facts about seahorses, including the number of seahorse species, where seahorses live, what they eat and how they reproduce.
Like Fish? Think About Being a Marine Biologist
When you picture a marine biologist, what comes to mind? Many picture a dolphin trainer, or maybe Jacques Cousteau. But marine biology covers a wide range of activities and organisms, and so does the job of a marine biologist. Here you can learn what a marine biologist is, what marine biologists do, and how you can become a marine biologist.
How Do Sharks Sleep?
Sharks need to keep water moving over their gills so that they receive oxygen. So that seems to mean that they need to keep moving all the time...or do they? How do sharks sleep? Even though sharks need to keep water moving over their gills to receive oxygen, some sharks need to keep moving to do this, while others don't. Either way, sharks, like other marine animals, don't seem to fall in a deep sleep like we do.
10 Things You Don't Know About Sharks
Sharks have a fierce reputation, but fascinating biology. Here we'll explore ten facts about sharks
What Is the Biggest Fish in the World?
The whale shark is the world's biggest fish, maxing out at about 65 feet in length and weighing up to about 75,000 pounds.
How Much Money Can a Marine Biologist Make?
What is the salary of a marine biologist? Learn about a marine biologist's job and salary range.
What to Know About Red Algae
Red algae are, not surprisingly, red, purplish or reddish in color. There are about 6,000 species of red algae and they are classified as protists in the phylum Rhodophyta. Red algae species range from simple one-celled organisms to complex, plant-like organisms.
What Are Protists?
Protists are organisms in the kingdom Protista. These organisms are eukaryotes, meaning they are made up of single or multiple cells which all contain a nucleus enclosed by a membrane.
What Are the 3 Types of Marine Algae?
Marine algae, more commonly known as seaweeds, come in all shapes and sizes. Here is an introduction to brown, red and green algae with some examples of each type of seaweed.
What Is a Crustacean?
The group of marine life known as crustaceans includes crabs, lobsters and shrimp - some of the most important marine life to humans. It also includes other animals such as amphipods and isopods. The crustaceans are in the Phylum Arthropoda and Subphylum Crustacea. Here you'll find the definition of crustacean and learn more about crustaceans.
10 Facts About the Large (and Strange!) Ocean...
Learn about the ocean sunfish - mola mola - how big it is, where it lives, what it eats, and how it reproduces.
How Marine Species Survive in the Ocean
There are thousands of species of marine life, from tiny zooplankton to enormous whales. Each is adapted to the specific habitat it occupies. Throughout the oceans, marine organisms must deal with several things that terrestrial life do not, including regulation of salt, obtaining oxygen, and adapting to water pressure. Learn about ways marine organisms survive in the oceans.
What to Know About Green Algae
Green algae range from simple, one-celled organisms to complex, multi-celled organisms. They may also live in large colonies. There are both marine and freshwater green algae species, although we will focus on the marine species here.
What You Should Know about the 7 Species of Sea...
There are seven recognized species of sea turtles. See photos and learn facts about these seven species.
The Ocean
Almost three-quarters of the Earth is ocean. Here you can learn facts about the ocean, about the major oceans of the world, and what the ocean is like as a marine life habitat.
What Do Seahorses Eat?
What do seahorses eat? Marine Life.
10 Fun Facts About Sea Turtles
There are seven recognized species of sea turtles, and all are endangered. Learn facts about sea turtles, including where they live, how they reproduce, and what they eat.
How Fast Can a Shark Swim?
The shortfin mako shark (Isurus oxyrinchus) appears to be the fastest shark species. Learn more about this speedy shark and other fast shark species.
What to Know About Brown Algae
Brown algae is the largest, most complex type of algae. This type of marine algae is brown, olive or yellowish-brown in color. Brown algae contains contains chlorophyll a and c and a pigment called fucoxanthin, which gives it its color. Types of algae include kelp, rockweeds and wracks in the genus Fucus and free-floating algae in the genus Sargassum.
10 Awesome Facts About Sea Otters
Learn 10 fascinating facts about sea otters.
What Is a Cartilaginous Fish?
What is a cartilaginous fish? Learn about cartilaginous fish - the group of fish that includes elasmobranchs: sharks, rays and skates.
What's It Like to Be a Marine Biologist?
Learn about the term marine biologist - what a marine biologist is, what marine biologists do, steps to becoming a marine biologist, and how much marine biologists earn.
Characteristics of the Gastropoda
The Class Gastropoda includes snails, slugs, limpets and sea hairs - all animals referred to as 'gastropods.' Learn about gastropods and see some examples here.
What Are Plankton?
class="no-js" itemscope itemtype="http://schema.org/Article" > itemprop="description" >Definition: "Plankton"
What’s the Fastest Fish?
What is the fastest fish in the ocean? Learn the answer here.
Ovoviviparous animals produce eggs, but instead of laying the eggs, the eggs develop within the mother's body and are birthed live.
Learn About 4 Different Seal Species
There are 32 species of seals. Here are 5, including Harbor seals (also called common seals). with links to further information.
12 Interesting Facts About Nudibranchs
What do nudibranchs eat? How do nudibranchs reproduce? Learn more about these fascinating sea slugs that live in all the world's oceans.
Echinoderms - Phylum Echinodermata
Echinoderms, or members of the Phylum Echinodermata, are some of the most easily-recognized marine invertebrates, many of which are found in tide pools or in the touch tank at your local aquarium. The Phylum Echinodermata includes 4 classes: Stelleroidea (sea stars), Echinoidea (sea urchins and sand dollars), Holothuroidea (sea cucumbers) and Crinoidea (sea lilies and feather stars.) They are a diverse group of organisms, containing about 6,000 species.
The Importance of Intertidal Zones
The intertidal zone is the area where land and sea meet, and often includes tide pools. Learn about the unique intertidal zone, tide pools, the types of marine life that live in the intertidal and threats to this habitat.
What Is the Deepest Part of the Ocean?
What is the deepest part of the ocean? Learn about the ocean's deepest point, how deep it is, and what lives there.
10 Easy Ways You Can Help Marine Life
All of our actions impact the ocean and the marine life it holds. Learn about easy ways that you can help protect marine life no matter where you live.
Are Whales Fish?
Whales are mammals. They are endothermic (warm-blooded), give birth to live young and nurse them, breathe oxygen from air, and have hair. Details here.
Sand Dollars
Find a sand dollar shell (test) on the beach? Here you can learn all about sand dollars - what they are, where they live, what they eat and how they reproduce.
What You Should Know About Sea Turtles
Sea turtles are reptiles that live in a marine or brackish environment. Learn about sea turtle reproduction, distribution, classification and conservation status.
What Is a Marine Biologist?
Learn the definition of the term marine biologist. Learn where marine biologists work, what they do, how to become a marine biologist, and what marine biologists get paid.
Conchs are a type of sea snail, and are also a popular seafood in some areas. The term 'conch' (pronounced
Mollusk 101
Learn about the Phylum Mollusca - the mollusks.
What Do Sea Otters Eat?
What do sea otters eat? Learn the answer here.
10 Fun Facts About Seals
Seals are divided into two families, the Phocidae, the earless or seals (e.g., harbor or common seals), and the Otariidae, the eared seals (e.g., fur seals and sea lions). Here you can learn 10 fascinating facts about seals.
Top 3 Shark Species Most Likely to Attack
What type of sharks are most likely to attack? Of the hundreds of shark species, there are 3 most often implicated in unprovoked shark attacks on humans. Learn more about these three species, and how you can prevent a shark attack.
Do Starfish Have Eyes?
Do starfish have eyes? Information about starfish (sea star) eyes. While it may appear that starfish have eyes, they do. Learn where the eyes are on a starfish.
Cetaceans - Whales, Dolphins and Porpoises
Cetacean is a word used to describe all whales, dolphins and porpoises in the order Cetacea. Learn about the characteristics of cetaceans, including baleen whales and toothed whales and how they survive in the oceans.
Fast Facts About Starfish and Sea Stars
Information about starfish, including facts about starfish species, images, starfish habitat, feeding and reproduction.
Starfish (Sea Stars)
Starfish, or sea stars, are star-shaped animals that are a variety of shapes, sizes and colors. You might be most familiar with the starfish that live in tide pools in the intertidal zone, but some starfish live in deep water. Learn about sea star classification, reproduction and feeding here.
What Eats Sea Turtles?
Sea turtles have shells to protect them, right? So what would eat a sea turtle? A sea turtle's shell only goes so far to protect them. Unlike land turtles,
Do Whales Have Hair?
Whales are mammals, so do whales have hair? Whales do have hair, but it's not visible in all species. Learn about hair in whales and how it is used.
9 Cool Facts About Lobsters
When you think of lobster, do you think of a bright red crustacean on your dinner plate, or a territorial creature roaming caves in the ocean? Despite their fame as a delicacy, lobsters also have fascinating lives. Learn some lobster facts about this iconic marine creature here.
Facts About the World’s Largest Sharks
Whale shark facts. Facts about whale sharks, including where whale sharks live, what whale sharks eat, where to see whale sharks, and how whale sharks reproduce.
Did you know that sponges are animals? There are thousands of species of sponges, and here you can learn about why these organisms are considered animals, how sponges are classified, how they feed and reproduce, and where they live.
What's the World's Biggest Shark?
The whale shark is the world's biggest shark species. Growing to a length of about 65 feet and weighing about 75,000 pounds, this streamlined fish is really a gentle giant.
What Is Inside a Sand Dollar?
What is inside a sand dollar shell? Here you can find out.
Killer Whale or Orca (Orcinus orca)
The killer whale, also known as the orca
Explore the 10 Species of Hammerhead Sharks
Learn about the various species of hammerhead shark, all of which have an interestingly shaped head. They range in size from about 3 to 20 feet long.
What You Need to Know About Marine Life
What is marine life? The phrase 'marine life' refers to organisms that live in salt water. These can include plants, animals and microbes (tiny organisms) such as bacteria and archaea. Here you can learn more about the types of marine life, major groups of marine life, and how to get a career working with marine life.
Why Should We Protect Sharks?
Why protect sharks? Learn about threats to sharks, why sharks are important, and how you can help sharks.
10 Facts About Killer Whales (Orcas)
Learn 10 facts about killer whales (orcas).
What is the Biggest Animal in the Ocean?
Learn which is the biggest animal and the biggest whale in the world, and see a list of other large ocean animals.
How Do You Distinguish a Male Lobster From a...
Want to know the sex of a lobster you've caught or are about to eat? Here's how to tell. Lobsters have feathery appendages called swimmerets underneath their tail. These swimmerets help a lobster swim and are also where a female lobster carries her eggs. Swimmerets also can clue you in to the sex of a lobster.
What is an Elasmobranch?
The term elasmobranch refers to the sharks, rays and skates, which are in the subclass Elasmobranchii and class Chondrichthyes. The Condrichthyes class includes only one other subclass, the Holocephali (chimaeras), which are unusual fish found in deep water.
Facts About the Blue Whale
The blue whale is the largest animal in the world. Learn where blue whales live, what they eat, how they reproduce, and how many are left in the world.
All You Want to Know About Ocean Sunfish
Fact sheet about the ocean sunfish. Learn how to identify ocean sunfish, where the ocean sunfish lives, and how the ocean sunfish feeds and reproduces.
How Do Dolphins Sleep?
How do dolphins sleep? Find out about how dolphins sleep - you may be surprised at the answer.
What Is a Bony Fish?
description and characteristics of bony fish - marine life overview
What Is Marine Biology?
Learn about the definition of marine biology and tools used by marine biologists.
What Is the Largest Jellyfish?
What is the largest jellyfish? Learn about the largest jellyfish, where it is found, and whether it is dangerous to humans.
Class Reptilia
The Class Reptilia refers to the reptiles - a diverse group of animals that are "cold-blooded" and have
What Are Sharks?
What are sharks? This article covers the basics on sharks, including shark anatomy, how sharks are classified, where they live, and what they eat.
Where Do Killer Whales Live?
Learn about the distribution of killer whales (orcas), and where you could see killer whales.
Do Whales Sleep?
Whales are voluntary breathers, meaning they think about every breath they take. That means they can't sleep the way we do. Learn how cetaceans (whales, dolphins and porpoises) sleep, or rest.
What Is the Largest Fish?
What is the largest fish? Learn about the largest fish in the world.
Major Marine Habitats
Within the oceans, there are many different types of habitat, or environments in which plants and animals live, ranging from freezing polar ice to tropical coral reefs. These habitats all come with their unique challenges and are inhabited by a wide variety of organisms. Learn more about important marine life habitats including mangroves, the intertidal zone and tide pools, coral reefs, seagrasses, the open ocean - pelagic zone, the deep sea and hydrothermal vents.
Dolphins Are Whales, and More Fun Facts
What is a dolphin? Learn about dolphins, including how many species of dolphins there are, and characteristics of dolphins.
Coral Reefs
Learn about coral reefs. Coral reefs are a center for biodiversity and an important marine habitat. Tropical corals, cold-water corals, the marine life species that inhabit them and the natural and human threats to coral reefs in the oceans are discussed here.
Facts About the Green Sea Turtle
Facts about the green sea turtle, including information on the green turtle's natural history, reproduction, distribution and conservation.
Order Cetacea
Facts about the Order Cetacea, the group of marine mammals that includes whales, dolphins and porpoises. Learn about cetacean characteristics, distribution, feeding, reproduction and conservation.
Blue Button Jelly (Porpita porpita)
Information about the blue button jelly, which is not really a jellyfish, but a hydroid. Learn where blue button jellies are found, what they eat, how they reproduce, and if they're dangerous to humans.
Class Asteroidea
class="no-js" itemscope itemtype="http://schema.org/Article" > itemprop="description" >While the classification
Placoid Scales
Read about the meaning of placoid scales and how they differ from the scales of bony fish. Know the alternative name for these scales.
How Are Pearls Made?
Learn how pearls form, including species that make pearls.
Where Do Polar Bears Live?
Where do polar bears live? Find out more.
10 Basic Whale Facts
Cetaceans - whales, dolphins and porpoises - are a diverse group of animals ranging in size from just a few feet long to over 100 feet long. While most whales spend their lives offshore in the ocean's pelagic zone, some inhabit coastal areas and even spend part of their lives in fresh water. Learn about how whales feed, reproduce and explore their world.
What Is a Starfish?
What is a starfish? Learn about starfish, or sea stars.
How Oil Spills Destroy Marine Life
Many people became familiar with the disastrous effects of oil spills in 1989 after the Exxon Valdez incident in Prince William Sound, Alaska. That spill is considered the worst oil spill in U.S. history -- although the 2010 BP leak in the Gulf of Mexico could prove to be even worse. Overall, the effects of an oil spill on marine life depend on a variety of factors, but can include hypothermia, poisoning, increased predation and other stressors, as well as effects on marine habitat.
What Are Hydrothermal Vents?
Hydrothermal vents, located in the deep sea, host a wide variety of marine life. Learn about hydrothermal vents and the animals that live there.
Munching Manatees
Manatees are herbivores, feeding primarily on aquatic plants. Learn about the types of food manatees eat.
A mollusk is an animal classified in the Phylum Mollusca. Here you can learn more about mollusks and find examples of mollusks.
Fascinating Facts About Flatback Turtles
Facts about the flatback sea turtle, including information on the flatback turtle's natural history, reproduction, distribution and conservation.
Whale, Dolphin, or Porpoise: What Are the...
Is it a whale, dolphin or porpoise? These terms are often used interchangeably, but there is a difference. Learn about the terms whale, dolphin and porpoise and how they are used to describe different members of the order Cetacea.
Want to learn about invertebrates? Here you can learn the definition of invertebrates, characteristics of invertebrates, and examples of invertebrates.
Fascinating Facts About Whale Sharks
While its name may be deceiving, the whale shark is actually a shark, and the largest fish in the world. Whale sharks can grow to 65 feet in length and up to about 75,000 pounds in weight. Females are generally larger than males
Stony Corals (Hard Corals)
Information about stony corals, the corals that form coral reefs. Stony corals, also called hard corals (as opposed to soft corals, like sea fans), are the reef-builders of the coral world. Learn more about stony corals - what they look like, how many species there are, and where they live.
Spiracles are found in bottom-dwelling sharks and rays. Spiracles are a pair of openings just behind the animal's eyes that allow it to draw oxygenated water in from above.
Facts About the Loggerhead Sea Turtle
Facts about the loggerhead sea turtle, including information on the loggerhead turtle's natural history, reproduction, distribution and conservation.
What Is a Mantle?
The mantle is an important part of the body of a mollusk. It forms the outer wall of the mollusk's body and encloses the mollusk's visceral mass (internal organs), and secretes calcium carbonate to form the mollusk's shell.
How Salty is the Ocean?
How salty is the ocean? Learn about how much salt is in the ocean.
Amazing Facts About American Lobsters
Many think of lobster as a bright red delicacy served up with a side of butter. But the American lobster (often called the Maine lobster), is also fascinating animal with a complex life.
Facts About the Leatherback Sea Turtle
Learn fascinating facts about the leatherback turtle - a wide-ranging, unique sea turtle species.
Dolphin Facts
Dolphin information - learn about dolphins through 10 fascinating facts.
Thresher Sharks
Learn about thresher sharks, including the 3 species of thresher sharks (bigeye thresher, common thresher, and pelagic thresher), and thresher shark feeding, habitat, reproduction, distribution and conservation status.
Chordata - Vertebrates and Other Animals
Information about the animals in the Phylum Chordata, which includes the vertebrates and animals that have a notochord at some stage in their development. Includes examples of animals that are in the Phylum Chordata.
Fascinating Facts About Cnidarians
Information about the cnidaria - the phylum that contains corals, jellyfish, sea anemones, sea pens and hydras. Learn about cnidaria facts, life cycles, where cnidaria are found and examples of cnidarians.
Byssal (Byssus) Threads
Byssal, or byssus threads are strong, silky fibers made from proteins that are used by mussels to attach to rocks, pilings, or other substrates.
Skates (the Fish, not the Footwear)
Learn about the type of marine life called skates. Where do skates live? How do they eat and reproduce? Find out more by reading this marine life profile of skates.
Types of Marine Mammals
Learn about types of marine mammals, including whales, dolphins, porpoises, sirenians and pinnipeds, with facts about each.
What Do Polar Bears Eat?
What do polar bears eat? Learn more about the species that polar bears eat along with other facts about polar bears.
Sea Turtle Predators
Learn about sea turtle predators - what eats sea turtles?
Facts about fish, including information on characteristics of fish, types of fish and where fish live.
Leatherback Sea Turtle Facts
Learn 5 facts about the leatherback turtle - the largest sea turtle.
Gulf of Mexico
Information on the marine habitats in the Gulf of Mexico, including the kinds of marine life that live in the Gulf of Mexico.
Gastropod Facts
Gastropods are animals in the Class Gastropoda - the group of organisms that includes snails, slugs, limpets and sea hares. There are over 40,000 species in this class. Envision a sea shell, and you're thinking about a gastropod, although this class contains many shell-less animals as well. Here is a round-up of information on gastropods, including their taxonomy, feeding, reproduction and examples of gastropod species.
What You Should Know About Soft Corals
Information about soft corals, also known as octocorals.
What Is Kelp?
Learn about the characteristics of kelp, and its importance. including examples and links to further reading, with our expert guide to marine life.
Sea Star Regenerating Arms
Sea Star Regenerating Three Arms. Page 6.
List of Shark Species
Learn about the types of sharks with this list of sharks species and facts about each.
What Is Radial Symmetry?
Definition of radial symmetry. Learn what radial symmetry is and in which marine organisms it occurs.
Facts About Great White Sharks
Facts about the white shark, commonly called the great white shark. Learn how to identify a white shark, where white sharks live, and what they eat.
What Is an Ectothermic Animal?
Definition of ectothermic. An ectothermic animal is one who cannot regulate its own body temperature, so its body temperature fluctuates according to its surroundings.
How Do Crabs Breathe?
Have you ever wondered how crabs breathe? Did you know that some crabs can breathe underwater, but others cannot? Here you can learn more about crab respiration.
Jellyfish: What You Should Know
Information about jellyfish. Learn about jellyfish facts, life cycles, where jellyfish are found and types of jellyfish.
What Are the Differences Between Baleen and...
There are over 80 recognized species of whales, dolphins and porpoises, or cetaceans, and these species are divided into two main groups: the baleen whales and the toothed whales. While they are all considered whales, there are some important differences between the baleen whales and toothed whales.
How to Determine the Sex of a Shark
Learn how to tell the difference between a male and female shark, and the basics of shark reproduction.
What Is Baleen?
Baleen is a strong, yet flexible material made out of keratin, a protein that is the same material that makes up our hair and fingernails.
Learn About Different Speciesof Tuna
Tunas are large, powerful fish that are distributed worldwide from tropical to temperate oceans. They are members of the family Scombridae, which includes both tunas and mackerels. Learn about the several species of fish known as tuna, and their importance commercially and as gamefish.
The Deep Sea - Benthic and Abyssal Zones
The deep sea includes the deepest, darkest, coldest parts of the ocean. Eighty percent of the ocean consists of waters in the deep sea greater than 1,000 meters in depth. Deep sea areas are cold, dark, and inhospitable to us humans, but support a surprising number of species that thrive in this deep sea environment. Learn more about what is considered the deep sea, how deep the deepest part of the ocean is, and what challenges marine life face in the deep sea.
Fun Facts About Basking Sharks
Facts about basking sharks, a large shark species that feeds on plankton. Learn about basking shark identification, diet, and distribution.
Watching Whales from Shore On Cape Cod
Learn about whale watching from shore on the coast of Cape Cod, focusing on whale watching from Provincetown, Massachusetts. See whales from shore in the spring from Cape Cod, MA. Learn viewing tips and what to bring.
10 Facts About Cuttlefish
Facts about cuttlefish, a cephalopod that lives in tropical and temperate waters and has amazing camouflage abilities.
Fun Facts About Lion's Mane Jellyfish
Lion's mane jellyfish are beautiful, but an encounter with them can be painful. Learn how to identify a lion's mane jellyfish and how to avoid them.
What to Expect When Visiting Clearwater Marine...
Review of Clearwater Marine Aquarium in Clearwater, FL, the home of Winter the dolphin and her friend Hope, and a number of other rescued dolphins, sea turtles and other marine life. Learn what to expect at Clearwater Marine Aquarium, a rescue and rehabilitation facility.
How Phylums Are Used to Classify Organisms
Learn the definition of the word phylum, including a list of marine phyla with examples.
The Marvelous Madreporite
The madreporite is an essential part of the circulation system in echinoderms. Here you can learn what a madreporite does and what it looks like.
Brittle Stars
Facts about brittle stars, including where they live, what they eat and how they reproduce.
What Is a Sand Dollar?
What is a sand dollar, really? Is it a living animal? Learn the basics about sand dollars here.
Seagrass is an angiosperm (flowering plant) that lives an a marine or brackish environment. There are about 50 species of true seagrasses worldwide and they are found within the plant families Posidoniaceae, Zosteraceae, Hydrocharitaceae, and Cymodoceaceae. Seagrasses require lots of light, so the depths at which they occur in the ocean are limited by the availability of light. Seagrasses are found in protected coastal waters such as bays and lagoons.
Brittle Stars and Basket Stars - Class...
Facts about the brittle stars, basket stars and serpent stars, marine invertebrates that belong to the Class Ophiuroidea, the group of marine invertebrates that contains the brittle stars and basket stars. Learn where brittle stars and basket stars live, how they feed, and how they reproduce.
Sea Star, Showing Tube Feet
Sea Star Image. Photo of a starfish, showing the animal's tube feet. Page 11.
Copepods are crustaceans, considered part of the plankton, and are an important prey item for fish, whales and other organisms. There are thousands of copepod species and they range throughout the world, in both fresh and saltwater. Learn more about the marine life term copepod here.
A bivalve is an animal that has two hinged shells. Examples of bivalves are clams, mussels, oysters and scallops. Learn more about bivalves here.
The Ins and Outs of Sea Star Anatomy
Here you can learn more about the characteristics of sea stars, and major points of their anatomy.
Learn the 14 Baleen Whale Species
Learn about the 14 species of baleen whales,and click through to species profiles and images.
Detritus is undissolved material from the decomposition of organic remains. Learn more about detritus and why it is an important part of the marine ecosystem.
What Is Zooplankton?
What are zooplankton? Learn about zooplankton and examples of zooplankton species.

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