The bobtail and swordtip squid are distantly related species, and one of five genera known to have bioluminescent organs called photophores, which contain light-emitting bacteria.
In return, the light produced by the bacteria actually helps hide a bobtail squid from its own predators thanks to a strategy known as counter-illumination.
Flamboyant cuttlefish, blue-ringed octopus, mimic octopus, wonderpus and bobtail squids are just a few of the numerous types of cephalopods to be found on many of the reefs.