When it comes to animal reproduction, there’s no one-size-fits-all strategy. Some animals need a mate, others don’t, and for some, it depends! In this episode, we’ll learn about sexual and asexual reproduction, internal and external...

Climate change shakes up all of Earth’s systems, including the living ones. In this episode of Crash Course Biology, we’ll see how climate change’s effects rattle the entire chain of life. Changes felt in one population ripple out to...

You'd think that there are some features that, once an animal group evolved to have them, could never really go away, right? Well, Stefan is joined today by hosts from PBS Eons, Journey To The Microcosmos, and Bizarre Beasts to break...

Join the Amoeba Sisters in exploring some general animal characteristics, major vocabulary used in classifying animals (such as symmetry, protostome vs deuterostome, cephalization, and coelom), and take a general tour of 9 major animal...

Brittle stars are eyeless, brainless animals that spend their time hanging out in dark crevices of coral reefs. But despite all this, it seems that they can still see...using their skin!

Moving along with our study of the diversity of the echinoderms, we arrive at class Asteroidea, the sea stars or starfish, and class Ophiuroidea, the brittle stars. How many different kinds of starfish are there? What is their...

Pupil outcome: I can skip count using the group size to find the number of groups. Key learning points: - Division means splitting into equal parts or groups. - Skip counting in the group size can be used to calculate the number of equal...

Continuing our study of the echinoderms, let's take a look at their body systems, especially the water vascular system and endoskeleton. What else can we say about their general anatomy and physiology? How do sea stars and sea urchins...

With the hemichordates covered let's check out the echinoderms. Echinodermata is the other phylum in the clade Ambulacraria, and they are found all around the world. The most familiar organisms in this clade are starfish or sea stars,...

An introduction to sea stars, including one that’s a metre wide! Biology - Animal Kingdom - Learning Points. Sea stars are a type of echinoderm. All adult echinoderms have radial symmetry, which means their body parts are arranged around...

Season 1, Turtles part 4. Brandon and Kayne finally get close to a turtle near the Heron Island Research Station. They locate a full grown female who is preparing her nest. Watch a turtle lay her eggs, learn about turtles in Australia,...

Brandon takes Kayne to the Great Barrier Reef to track down one of the greatest sights in the animals kingdom: baby Turtles racing for the sea minutes after they are born.

On this episode of Breaking Trail, Coyote is joined by Tide Pool expert Aron Sanchez as they comb the California shoreline in search of the mysterious sea creatures that live among the rocks and crashing waves! Finding everything from...

This video is a lesson on invertebrates, the largest group in the animal kingdom. It explains the two main groups of animals - vertebrates and invertebrates - and focuses on the characteristics and examples of invertebrates. The video...