David Fleetham / Sea snail (Thyca crystallina), two growing on host Blue sea star (Linckia laevigata). Philippines.

David Fleetham / View across crater of dormant Haleakala / East Maui Volcano. Haleakala National Park, Maui, Hawaii. March 2016.

David Fleetham / Kawakiu Nui Beach on West End, Molokai, Hawaii. July 2017.

David Fleetham / Painted frogfish (Antennarius pictus) with first dorsal spine and lure extended to attract prey. Dumaguete, Philippines.

David Fleetham / Imperial commensal shrimp (Periclimenes imperator / Zenopontonia rex) on Spanish dancer nudibranch (Hexabranchus sanguineus) at night. Philippines.

David Fleetham / Slender spongegoby (Phyllogobius platycephalops) and two Crabs of different species on Sponge. Several parasites with egg cases on the side of the Goby. Philippines.

David Fleetham / Sea urchin crab (Echinoecus pentagonus), female inside Common banded urchin (Echinothrix calamaris) rectum. Hawaii.

David Fleetham / Spotted boxfish (Ostracion meleagris) swimming above sea floor. Hawaii.

David Fleetham / Jack (Caranx sp), shoal of juveniles following Southern stingray (Dasyatis americana), searching for prey. Bahamas.

David Fleetham / White spotted hermit crab (Dardanus megistos) amongst coral. Kauai, Hawaii.