Shane Gross / Flying fish (Exocoetidae) in Sargasso Sea, Atlantic Ocean.

Shane Gross / Caribbean reef shark (Carcharhinus perezi), two from below, one close up. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / American crocodile (Crocodylus acutus) with open mouth amongst Seagrass (Alismatales). Gardens of the Queen National Park, Cuba.

Shane Gross / Larval flounder (possibly Laeops Kitahara) in the open ocean at night off Anilao, Philippines.

Shane Gross / Portrait of a Thorny seahorse (Hippocampus histrix) near Malapascua, Philippines.

Shane Gross / Pygmy seahorse (Hippocampus bargibanti) holding on to a branch of a sea fan coral. Malapascua, Philippines.

Shane Gross / Pelagic thresher shark (Alopias pelagicus) cleaned by a Bluestreak cleaner wrasse (Labroides dimidiatus) at Monad Shoal off Malapascua Island, Philippines.

Shane Gross / Pelagic thresher shark (Alopias pelagicus) being cleaned by a bluestreak cleaner wrasse (Labroides dimidiatus) at Monad Shoal off Malapascua Island, Philippines.

Shane Gross / Thorny or spiny seahorse (Hippocampus histrix) portrait made off Anilao, Philippines.

Shane Gross / Bubble coral shrimp (Vir philippinensis) on Bubble coral (Plerogyra sp). Anilao, Philippines.

Shane Gross / Larval Wonderpus octopus (Wunderpus photogenicus) drifting in the open ocean at night off Anilao, Philippines.

Shane Gross / Wonderpus octopus (Wunderpus photogenicus) in its juvenile or larval stage. At this stage it is transparent and drifts in the open ocean as plankton. Anilao, Philippines.

Shane Gross / Almaco jack (Seriola rivoliana) uses a discarded fishing net, drifting in the open ocean as shelter. The Bahamas.

Shane Gross / Green sea turtle (Chelonia mydas) resting in a coral reef. Eleuthera, Bahamas.

Shane Gross / Bottlenose dolphin (Tursiops truncatus) underwater playing in the shallows off Eleuthera, Bahamas.

Shane Gross / Bottlenose dolphin (Tursiops truncatus) underwater rubbing herself on a sponge off Eleuthera, Bahamas.

Shane Gross / Elkhorn corals (Acropora palmata) at night silhouetted by a scientist's light during the annual coral spawn. Abaco, Bahamas.

Shane Gross / Graysby fish (Cephalopholis cruentata) a type of grouper, hiding in a sponge off Eleuthera, Bahamas.

Shane Gross / Queen conch (Lobatus gigas) juvenile feeding on algae growing on Seagrass (Thalassia testudinum) blades. Eleuthera, Bahamas.

Shane Gross / Moorish idol (Zanclus cornutus) juvenile with transparent skin in the open ocean at night off Anilao, Philippines.

Shane Gross / A juvenile soldierfish, possibly a Crescent-tail bigeye (Priacanthus hamrur) in the open ocean at night off Anilao, Philippines.

Shane Gross / Invasive Lionfish (Pterois volitans) which have taken over and are wiping out native fish in the Atlantic ocean. The highest densities are in the northern gulf of Mexico. Destin, Florida, USA.

Shane Gross / Invasive Lionfish (Pterois volitans) which have taken over and are wiping out native fish in the Atlantic ocean. The highest densities are in the northern gulf of Mexico. Destin, Florida, USA.

Shane Gross / A small aggreggation of queen conch (Lobatus gigas) off Cat Island, Bahamas

Shane Gross / Queen conch (Lobatus gigas) laying eggs in the Exuma Cays Land and Sea Park, Exuma, Bahamas.

Shane Gross / Nurse sharks (Ginglymostoma cirratum) two in a courtship dance at sunrise in a mangrove area near Eleuthera, Bahamas.

Shane Gross / Lemon shark pup (Negaprion brevirostris) in mangrove forest which acts as a nursery for juveniles of this species. Eleuthera, Bahamas.

Shane Gross / Lemon shark pup (Negaprion brevirostris) in mangrove forest which acts as a nursery for juveniles of this species. Eleuthera, Bahamas.

Shane Gross / Lemon shark pup (Negaprion brevirostris) in mangrove forest which acts as a nursery for juveniles of this species. Eleuthera, Bahamas.

Shane Gross / Cuban crocodile (Crocodylus rhombifer) in a cenote in Cienaga de Zapata National Park. Cuba. Critically endangered species.

Shane Gross / Cuban crocodile (Crocodylus rhombifer) in a cenote in Cienaga de Zapata National Park. Cuba. Critically endangered species.

Shane Gross / Southern stingray (Dasyatis americana) female covering itself with sand to hide. Nassau, Bahamas.

Shane Gross / Loggerhead sea turtle (Caretta caretta) with two Remora fish (Echeneididae) above sea floor. Bahamas.

Shane Gross / African pompano (Alectis ciliaris) shoal, three swimming in row. Bahamas.

Shane Gross / Tropical reef fish caught in trap. Bahamas.

Shane Gross / Baited remote underwater video (BRUV) setup by scientists to determine predator abudance. Bahamas. 2017.

Shane Gross / Hawksbill sea turtle (Eretmochelys imbricata) above sea floor, close up. Bahamas.

Shane Gross / Caribbean reef shark (Carcharhinus perezi) swimming over Coral reef. Eleuthera, Bahamas.

Shane Gross / Spanish slipper lobster (Scyllarides aequinoctialis) emerging from coral reef at night. Bahamas.

Shane Gross / Nassau grouper (Epinephelus striatus) juvenile sheltering in Red sponge (Porifera sp) colony. Eleuthera, Bahamas.

Shane Gross / Superb green cicada (Neotibicen superbus) adult emerging from exuvia. Harbour Island, Bahamas.

Shane Gross / Superb green cicada (Neotibicen superbus) adult emerging from exuvia. Harbour Island, Bahamas.

Shane Gross / Goldentail moray eel (Gymnothorax miliaris) with mouth open, close up. Eleuthera, Bahamas.

Shane Gross / Green sea turtle (Chelonia mydas), drowned, hooked and tangled in fishing line as bycatch. Bahamas.

Shane Gross / Black grouper (Mycteroperca bonaci) above sea floor. Exuma Cays Land and Sea Park, marine protected area, Bahamas.

Shane Gross / Caribbean spiny lobster (Panulirus argus), two in territorial fight in coral reef. Exuma Cays Land and Sea Park, marine protected area, Bahamas.

Shane Gross / Caribbean reef shark (Carcharhinus perezi) and Horse eye jack (Caranx latus) shoal silhouetted underneath catamaran boat, Bahamas.

Shane Gross / Great hammerhead shark (Sphyrna mokarran) swimming along coral reef wall. Exuma Cays Land and Sea Park, marine protected area, Bahamas.

Shane Gross / Caribbean reef shark (Carcharhinus perezi) swimming over Manatee grass (Syringodium filiforme). Nassau, Bahamas.

Shane Gross / Blacknose shark (Carcharhinus acronotus) group in a mating aggregation. The Bahamas.

Shane Gross / Smallmouth grunt (Haemulon chrysargyreum) shoal schooling on coral reef. Nassau, Bahamas.

Shane Gross / Sergeant major damselfish (Abudefduf saxatilis) shoal. Nassau, Bahamas.

Shane Gross / Caribbean reef shark (Carcharhinus perezi) swimming along edge of blue hole. Bahamas.

Shane Gross / Arrow crab (Stenorhynchus seticornis) on coral. Eleuthera, Bahamas.

Shane Gross / Marine biologist measuring Brain coral (Colpophyllia natans), ongoing program to monitor and restore coral reefs in The Bahamas. Eleuthera, Bahamas. 2017.

Shane Gross / Green sea turtle (Chelonia mydas) swimming to take a breath, reflected in water surface. Eleuthera, Bahamas.

Shane Gross / Caribbean reef squid (Sepioteuthis sepioidea), shoal of six. Eleuthera, Bahamas.

Shane Gross / Green sea turtle (Chelonia mydas) with open mouth, swimming below surface. Eleuthera, Bahamas.

Shane Gross / Stoplight parrotfish (Sparisoma viride) eating algae on coral reef. Eleuthera, Bahamas.

Shane Gross / Skips and rubbish on coast of Harbour Island. Waste management can be a challenge on small islands and plastic blows into sea. Bahamas. 2017.

Shane Gross / Grass squid (Pickfordiateuthis pulchella). Eleuthera, Bahamas.

Shane Gross / Green sea turtle (Chelonia mydas) resting on sea floor beside Coral head covered in Sponges, fish swimming above coral. Eleuthera, Bahamas.

Shane Gross / Eagle ray (Aetobatus narinari), ventral view. Bahamas.

Shane Gross / Eagle ray (Aetobatus narinari) swimming over coral reef, Bahamas.

Shane Gross / Eagle ray (Aetobatus narinari) shoal over coral reef. Bahamas.

Shane Gross / Schoolmaster snapper (Lutjanus apodus) shoal sheltering amongst Red mangrove (Rhizophora mangle) roots. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Hogfish (Lachnolaimus maximus) swimming over coral reef. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Caribbean reef shark (Carcharhinus perezi) in Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Silky shark (Carcharhinus falciformis). Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Silky shark (Carcharhinus falciformis), three in open ocean. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Black grouper (Mycteroperca bonaci) with Remora fish (Remora sp). Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Caribbean reef shark (Carcharhinus perezi) swimming over coral reef, silhouetted. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / American crocodile (Crocodylus acutus) in coastal waters. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Caribbean reef shark (Carcharhinus perezi) patrolling coral reef with Schoolmaster snapper (Lutjanus apodus) and other fish. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Artichoke coral (Scolymia cubensis), close-up of mouth. Gardens of the Queen National Park, Cuba.

Shane Gross / Coral reef wall with sponges, Caribbean reef shark (Carcharhinus perezi) in background. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Hawksbill turtle (Eretmochelys imbricata) swimming over coral reef crevasse, view from below. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Arrow blenny (Lucayablennius zingaro) peeking out from Fire coral (Millepora dichotoma). Gardens of the Queen National Park, Cuba.

Shane Gross / Desmarest's hutia (Capromys pilorides) climbing in tree. Gardens of the Queen National Park, Cuba.

Shane Gross / Black grouper (Mycteroperca bonaci) swimming in coral reef. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Caribbean reef shark (Carcharhinus perezi) swimming over coral reef. Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Silky shark (Carcharhinus falciformis), three in Caribbean Sea off Gardens of the Queen National Park, Cuba.

Shane Gross / Desmarest's hutia (Capromys pilorides) in tree on beach. Gardens of the Queen National Park, Cuba.

Shane Gross / American crocodile (Crocodylus acutus) with open mouth in Seagrass (Alismatales) meadow, reflected on water surface. Gardens of the Queen National Park, Cuba.

Shane Gross / Ornate ghost pipefish (Solenostomus paradoxus) camouflaged among tall seagrass blades off North Sulawesi, Indonesia.

Shane Gross / Common ghost goby (Pleurosicya mossambica) on soft coral, Alor, Indonesia.

Shane Gross / Map puffer fish (Arothron mappa) hiding inside a barrel sponge, off Flores, Indonesia.

Shane Gross / Sharpsnout snake eel (Apterichtus klazingai) peering out from the seabed, off North Sulawesi, Indonesia.

Shane Gross / Marbled snake eel (Callechelys marmorata) burries herself in the sandy seabed off North Sulawesi, Indonesia.

Shane Gross / A Banded sea krait (Laticauda colubrina) searches a seagrass bed for food, off North Sulawesi, Indonesia.

Shane Gross / Plastic bags and other plastic pollutants are carried on tidal currents in North Sulawesi, Indonesia.

Shane Gross / Plastic bottles, bags and other plastic pollutants are carried on tidal currents in North Sulawesi, Indonesia.

Shane Gross / Plastic bags and other plastic pollutants are carried on tidal currents in North Sulawesi, Indonesia.

Shane Gross / Close up of the face of a Hawksbill sea turtle (Eretmochelys imbricata) off North Sulawesi, Indonesia.

Shane Gross / Green sea turtle (Chelonia mydas) in clear, blue water off North Sulawesi, Indonesia.

Shane Gross / Green sea turtle (Chelonia mydas) rests in a coral wall off North Sulawesi, Indonesia.