Burglar alarms Other animals use their bioluminescence
to "scream" for help. Once an animal is caught in the clutches of a
predator, its only hope for escape may be to attract the attention of something
bigger and nastier that may attack and eat whatever is about to eat it. This amazing
light show is known as a "burglar alarm" display. The deep-sea jellyfish,
Atolla wyvillei, is a
master of this display.