underwater

California gray whale (Eschrichtius robustus) mother and calf underwater in San Ignacio Lagoon, Baja California Sur, Mexico, North America

Green sea turtle (Chelonia mydas) underwater, Maui, Hawaii, United States of America, Pacific

Fluro diving on Sakatia Island, Madagascar, Indian Ocean, Africa

Seaplane and couple snorkeling, Maldives, Indian Ocean, Asia

Unidentified large jellyfish in brash ice, Cierva Cove, Antarctica, Southern Ocean, Polar Regions

Caribbean reef shark (Carcharhinus perezii), Roatan, Bay Islands, Honduras, Caribbean, Central America

Caribbean reef shark (Carcharhinus perezii), Roatan, Bay Islands, Honduras, Caribbean, Central America

Unidentified large jellyfish in brash ice, Cierva Cove, Antarctica, Southern Ocean, Polar Regions

Shoal of sardines, Panagsama Beach, Moalboal, Cebu, The Visayas, Philippines, Southeast Asia, Asia

Fakarawa, Tuamotu Archipelago, French Polynesia, Pacific Islands, Pacific

close up of Caribbean reef shark (Carcharhinus perezii) eating lionfish (Pterois volitans), Roatan, Bay Islands, Honduras, Caribbean, Central America

Eagle rays (Mobula hypostoma) common in this area and often seen feeding on zooplankton in large groups, Yum Balam Marine Protected Area, Quintana Roo, Mexico, North America

Galapagos sea lions (Zalophus wollebaeki) underwater, Champion Island, Galapagos Islands, Ecuador, South America

Caribbean reef shark (Carcharhinus perezii) with the sun seen from below, Roatan, Bay Islands, Honduras, Caribbean, Central America

Green sea turtle (Chelonia mydas) underwater, Maui, Hawaii, United States of America, Pacific

Moon jellyfish bloom (Aurelia aurita), Prince William Sound, Alaska, United States of America, North America

Hard and soft corals and sea star underwater on Sebayur Island, Komodo Island National Park, Indonesia, Southeast Asia, Asia

Diver swimming along a wall at Bunaken, Sulawesi, Indonesia, Southeast Asia, Asia

Green sea turtle (Chelonia mydas) underwater, Maui, Hawaii, United States of America, Pacific

Galapagos sea lions (Zalophus wollebaeki) underwater, Champion Island, Galapagos Islands, Ecuador, South America

Grey reef shark, Turks and Caicos, West Indies, Caribbean, Central America

Tikehau, Tuamotu Archipelago, French Polynesia, Pacific Islands, Pacific

California sea lion bulls (Zalophus californianus) underwater, Los Islotes, Baja California Sur, Mexico, North America

Sea nettle jellyfish (chrysaora fuscescens), Monterey Aquarium, California, United States of America, North America

Schooling Bigeye trevally (Caranx sexfasciatus) (jacks), Sipadan Island, Celebes Sea, Sabah, Malaysia, Southeast Asia, Asia

A sea lion in the shallow waters around Rabida Island, Galapagos, Ecuador, South America

Green sea turtle (Chelonia mydas) underwater with snorkeler, Maui, Hawaii, United States of America, Pacific

Seaplane and couple snorkeling, Maldives, Indian Ocean, Asia

Free diving snorkeller and sunburst on the Great Barrier Reef, UNESCO World Heritage Site, Cairns, Queensland, Australia, Pacific

A large school of bigeye trevally (Caranx sexfasciatus) in deep water near Cabo Pulmo, Baja California Sur, Mexico, North America