Inside deep-sea coral in the Pacific, an iridescent creature waits in ambush. Zhou Y, Zhang R, Shen C, Mao Q, Zhang M, Zhang ...

Nudibranchs eat sponges and recycle the poisonous chemicals the sponges ... The hermit crab has a soft abdomen which it protects by occupying shells left empty by dead sea snails and other animals.

"The rock, with all the grooves, will attract plankton, baby sponges and baby corals, [and] the hard surface creates the reef and colonises the sea bed," Dr Gillies said. The rubble is also ...