Shell-dwelling cichlids build nests from empty snail shells, using them for shelter and to raise their young. • Stereotypical behavioral sequence: The fish follow a set sequence of actions to bury the ...

Tiny snails found on Australia's eastern coast can flicker their spiral shells like dim, blue-green light bulbs. Some snails excrete bioluminescent trails of snot or blink their muscly foot to attract ...

Berkeley -- Biologists have tracked down genes that control the handedness of snail shells, and they turn out to be similar to the genes used by humans to set up the left and right sides of the body.