Sperm whales dive over 3,000 meters deep to escape threats, holding breath for up to 90 minutes, evading most predators.
When threatened, sea cucumbers expel their sticky, toxic intestines to entangle and deter predators—then regenerate them later!
When in danger, opossums "play dead" by going limp, slowing their heartbeat, and even releasing a foul-smelling odour to fool predators.
This amphibian pushes its sharp rib bones through its skin to create deadly spikes against predators.
Young hoatzin birds have claws on their wings! If threatened, they drop into the water and use their claws to climb back up to safety.