These iguanas can stop their hearts for 45 minutes

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Marine iguanas took the advice 'just play dead' to terrifying biological extremes. When diving for algae in the freezing Galapagos waters, they risk alerting sharks with their heartbeat. To avoid becoming a snack, they can voluntarily shut down their cardiovascular system, stopping their heart entirely for up to 45 minutes until the danger passes and they surface to warm up.

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These iguanas can stop their hearts for 45 minutes — STACKY / Science

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Octopuses bypass slow evolutionary constraints by aggressively editing their messenger RNA on the fly, allowing them to rapidly alter their neural proteins to survive freezing…

Komodo dragons kill with venom, not dirty mouths

In some reptiles, nest temperature picks sex

Sperm whales play a critical role in combating climate change purely by defecating massive, nutrient-rich plumes near the surface of the ocean, an elegant process marine biologists call the whale pump.

Marine biologists have discovered that sperm whales communicate through a complex series of rapid clicking noises called codas, and distinct geographical clans actually possess…

Sharks wear tiny teeth instead of scales

A bigger world.
One discovery
at a time.