Curated Video
Chordate
Animals that at least at some stage in their development possess a stiff, rod-like structure running along their back, called a notochord. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning...
Curated Video
How Did Fish Evolve?
Journey through the evolution of fish, from the first vertebrate to the fish species that would eventually evolve to crawl onto land. Biology - Animal Kingdom - Learning Points. The first fish was called Haikouichthys, and it evolved in...
Catalyst University
Electric Rays: 200 V Electrifying Machines!
Here we explore interesting facts about Electric Rays, cartilaginous ray-fish that can generate up to 200 V of electricity to attack their prey or defend against predators.
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Catfish (order Siluriformes) overcrowded large shoal, Kungkungan Bay Resort, Sulawesi, Indonesia
Catfish (order Siluriformes) overcrowded large shoal, Kungkungan Bay Resort, Sulawesi, Indonesia
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Turtle Falling Off A Log
Florida Cooter tries to get on top of a floating log, the log turns over taking the turtle with it, but he perseveres and manages to climb back on
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Barnacle-Covered Sea Turtle Surfacing and Diving
Close up view of a large, old Green Sea Turtle with a back covered in barnacles as he swims to the surface in turquoise water, takes a breath and dives back down
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MS Whitetip Reef Shark, swims past camera, Sipadan, Borneo, Malaysia
MS Whitetip Reef Shark, swims past camera, Sipadan, Borneo, Malaysia
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A small group of Reef Manta Rays (Manta alfredi) swim at the surface of the water off the coast of Oahu.
A small group of Reef Manta Rays (Manta alfredi) swim at the surface of the water off the coast of Oahu.
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Sunlight glimmers on the surface of the water as a Reef Manta Ray (Manta alfredi) floats peacefully.
Sunlight glimmers on the surface of the water as a Reef Manta Ray (Manta alfredi) floats peacefully.
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A Reef Manta Ray (Manta alfredi) swims over a reef near the coast of the Hawaiian island of Oahu.
A Reef Manta Ray (Manta alfredi) swims over a reef near the coast of the Hawaiian island of Oahu.
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In clear Hawaiian waters, a single Reef Manta Ray (Manta alfredi) floats tranquilly.
In clear Hawaiian waters, a single Reef Manta Ray (Manta alfredi) floats tranquilly.
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A stunning Reef Manta Ray (Manta alfredi) floats in transparent waters on the coast of Oahu.
A stunning Reef Manta Ray (Manta alfredi) floats in transparent waters on the coast of Oahu.
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A small group of Reef Manta Rays (Manta alfredi) swim in waters off the coast of the Hawaiian Island of Oahu.
A small group of Reef Manta Rays (Manta alfredi) swim in waters off the coast of the Hawaiian Island of Oahu.