Krill

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Zoology

Krill are a crucial part of the Antarctic food web, with a biomass exceeding that of all the humans on Earth. elaborate share

Pufferfish

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Zoology

Some pufferfish species contain tetrodotoxin, a neurotoxin so potent that there's no known antidote. A tiny amount can be fatal to humans. elaborate share

Nautilus

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Zoology

Nautilus shells have a pearly interior layer that's thicker than that of other shelled mollusks, making them exceptionally strong. elaborate share

Zoogeography

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Zoology

The unique marsupial fauna of Australia is a prime example of zoogeographic vicariance – the geographic separation of populations leading to the evolution of distinct species. elaborate share

Goblin Shark

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Zoology

Goblin sharks have bioluminescent skin, meaning they can produce their own light. elaborate share

Sailfish

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Zoology

Sailfish can accelerate faster than any other marine animal. elaborate share