First described by scientists in 1998, the remarkable mimic octopus (Thaumoctopus mimicus) can shift its shape, movements and color to impersonate toxic lionfish, flatfish and even sea snakes. Such mimicry allows it to swim in the open with relatively little fear of predators.
The black-marble jawfish (Stalix histrio), on the other hand, is a small, timid fish. It spends most of its adult life close to a sand burrow that serves as its hideout if a predator comes along.
"All jawfish are really specialized for living in burrows," said researcher Luiz Rocha, an ichthyologist at the California Academy of Sciences in San Francisco. "They're almost never found outside their burrows."
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