If you want to be able to breathe underwater, you're going to need to get creative. So some turtles, dragonfly nymphs, and sea cucumbers decided to use their butts.

You’d think that animals that lived in water wouldn’t have to drink it -- but some fish do. Learn all about how different kinds of fish get the fresh water that they need to survive.

Jessi and Squeaks adopted a new fish! They have him all set up in a nice fish tank, but now they have a big question: how do fish breathe underwater?!

Paul Andersen shows how homeostasis reflects of evolution through time. The endocrine system shows continuity through flatworms, earthworms and vertebrates. However the respiratory system shows change as organisms move onto land. The...

If you feel like a fish out of water in the kitchen, this guide will have you slicing and dicing like a professional chef in no time.

In this video, we explore the fascinating world of fish and their diverse anatomy and adaptations. From jawless fish to those with cartilage skeletons and bone skeletons, fish share common characteristics such as living in water, having...

This video provides an overview of different sea creatures, explaining which ones are fish and which ones are mammals. It also delves into the anatomy and characteristics of fish, including their fins, circulatory system, feeding habits,...

Toadstool and mushroom are merely unscientific labels to define different varieties of fungus. Yes, the mushroom that we eat is actually a fungus! There is a popular consensus that while mushrooms are white-capped species that grow in...

Whether fish get thirsty depends on the fish you look at. Fish that live in freshwater have different physiology to deal with their environment than fish in salty seawater. These physiological differences dictate whether fish need to...

Fish are by far the most diverse of all the vertebrate groups. Discover the shared characteristics that make a fish, a fish. Biology - Animal Kingdom - Learning Points. Fish are aquatic vertebrates. Jellyfish, starfish and other marine...

Discover the characteristics and lifestyle of Chinese and Japanese giant salamanders, the largest amphibians in the world. Biology - Animal Kingdom - Learning Points. The two biggest species of salamander are the Chinese giant salamander...

An introduction to amphibian life. How do amphibians differ from other land vertebrates? And why they are still so dependent on water to survive? Biology - Animal Kingdom - Learning Points. Amphibians follow a two-stage life cycle: a...

What is it? These are the gills of a shark!
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A Twig Tidbit Film - Big Reveal. The image zooms out from an extreme close-up to full frame. The...

Did you know that basking sharks use gill rakers, large combs in their mouths, to filter plankton from the seawater?
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Find out why we classify whales as mammals, not fish.
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Meet the very unusual mudskipper fish – it can walk on land!
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Find out how fish breathe underwater.
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This video delves into the fascinating world of octopuses, revealing their unique anatomy and remarkable abilities. From the structure of their bodies to their extraordinary features like blue blood, venomous beaks, and jet propulsion,...

It's time to wrap things up with the mollusks, so let's look at five smaller classes consisting of lesser known species. These are Polyplacophora, Monoplacophora, Scaphopoda, Solenogastres, and Caudofoveata. What kinds of creatures are...

Dive into the fascinating world of sharks with this video that explores their diverse species, unique characteristics, and incredible hunting abilities. From the gentle giants like whale sharks to the swift predators like great white...

This video provides an engaging and informative look at eels, showcasing their unique characteristics and behaviors. Viewers learn about the eel's appearance, movement, habitat, and longevity. The footage offers a glimpse into the...

This video explores the fascinating world of fish, highlighting their unique adaptations for living underwater such as gills for breathing and fins for swimming. Viewers are taken on a colorful journey through different types of fish,...

Kids love learning about the characteristics of arthropods, fish, amphibians, reptiles, birds, and mammals. Using a fun game show format, students learn that arthropods have an exoskeleton, segmented bodies, and jointed legs. They are...

Coach Socrates reviews the protein section of the food pyramid and tells the student that fish is another excellent source of protein. He talks about the different kinds of fish we can eat, and then demonstrates to Miss Palomine how to...