Scorpionfish are so
successfully adapted to hiding on the seafloor bottom that
their swim bladders have atrophied. They can barely swim.
Instead, they lie in the sand, partially buried, camouflaged
from passing fish. When an unwary victim swims by, the
scorpionfish lunges out and sucks in its prey with an
The ability to blend into the surroundings is an adaptation
called crypsis. However the scorpionfish can also announce its
presence by flashing red as a warning.
See comparison: lionfish