Two couples snorkelling in the Maldives, Indian Ocean, Asia

Couple snorkelling, Maldives, Indian Ocean, Asia

Galapagos sea lion (Zalophus wollebaeki) underwater with snorkelers at Champion Islet near Floreana Island in the Galapagos Island Archipeligo, Ecuador. Pacific Ocean

Sailfish & snorkeler. Mexico

Sailfish & snorkelers. Mexico

Snorkeler with green sea turtle (Chelonia mydas) at cleaning station at Olowalu Reef on the west side of the island of Maui, Hawaii, USA

Galapagos sea lion (Zalophus wollebaeki) underwater with snorkelers at Champion Islet near Floreana Island in the Galapagos Island Archipeligo, Ecuador. Pacific Ocean

California sea lion (Zalophus californianus) among snorkelers underwater at Los Islotes (the islets) just outside of La Paz, Baja California Sur in the Gulf of California (Sea of Cortez), Mexico.

A snorkeler and a green sea turtle (Chelonia mydas) in the protected marine sanctuary at Honolua Bay on the northwest side of the island of Maui, Hawaii, USA

Snorkeler with adult green sea turtle (Chelonia mydas) in the protected marine sanctuary at Honolua Bay on the northwest side of the island of Maui, Hawaii, USA

Happy couple taking a selfie while snorkeling in tropical turquoise water, enjoying their vacation in a beautiful seascape

Young multi ethnic couple enjoying snorkeling together in crystal clear tropical sea, woman making victory sign

Two Young Women In The Ocean With Snorkelling Gear, Punta Cana, La Altagracia, Dominican Republic

Two men free diving over a Hawaiian hard coral reef with slate pencil sea urchins (Heterocentrotus mammillatus), Hawaii, United States of America

A snorkeler dives on a healthy hard coral reef near Two Tree Island off Kadavu Island in the southeast corner of Fiji, Fiji

Two women free diving at Molokini Marine Preserve off the island of Maui, Maui, Hawaii, United States of America

Two young women free diving with black triggerfish (Melichthys niger), Molokini Marine Preserve off the island of Maui, Maui, Hawaii, United States of America

A young couple free diving in clear water over a Hawaiian reef, Hawaii, United States of America

Skin Diving at Maldives, Ellaidhoo House Reef, North Ari Atoll, Maldives

Skin Diving at Maldives, Ellaidhoo House Reef, North Ari Atoll, Maldives