1202-1129 - Scuba diving on a healthy coral reef in the Gaafu Dhaalu atoll, in the Maldives, Indian Ocean.

1387-978 - Scuba divers interacting with a pair of tiger sharks, Tiger Beach, Bahamas.

1387-928 - Scuba diver swimming over a massive school of jack fish in Cabo Pulmo, Mexico

1387-1516 - A young married couple celebrate their ten year anniversary by scuba diving in the clear freshwaters of Devil's Den Springs, a sinkhole in Williston, Florida, as the afternoon sun filters down into the cavern.

1387-1515 - A scuba diver swims through an underwater field of tape grass leading away from the Blue Springs cave in Merritts Mill Pond in Marianna, Florida.

1387-1514 - A scuba diver surfacing and looking up into the light as he ascends from the bottom of Devil's Den, a sinkhole in Williston, Florda.

1387-1512 - A scuba diver ascends into the light emanating above through the sink hole into the clear freshwaters of Devil's Den cave near Williston, Florida.

1387-1450 - Scuba diver and silvertip shark (Carcharhinus albimarginatus) at The Bistro Dive site in Fiji.

1387-1351 - Scuba diver on her underwater propulsion vehicle getting a close-up look at an upside-down jellyfish, Bonaire, Caribbean Netherlands.

1387-1349 - Scuba diver swims by some large sponges off the coast of Bonaire, Caribbean Netherlands.

1387-1347 - Scuba diver and a common spiny lobster, Bonaire, Caribbean Netherlands.

1387-1346 - Scuba diver swims by some large sponges off the coast of Bonaire, Caribbean Netherlands.

1387-1337 - Scuba diver propels above a large vase sponge, Bonaire, Caribbean Netherlands.

1387-1331 - Scuba diver navigates the waters using a diver propulsion vehicle off the coast of Bonaire, Caribbean Netherlands.

1387-1328 - Scuba diver swimming underwater amongst sea sponges, Bonaire, Caribbean Netherlands.

1387-1327 - Scuba diver swimming underwater amongst sea sponges, Bonaire, Caribbean Netherlands.

1387-1312 - Scuba diver uses a diver propulsion vehicle to navigate the waters off the coast of Bonaire, Caribbean Netherlands.

1387-1121 - Whale shark reflected on surface with scuba diver in the distance, Christmas Island, Australia.

1387-1077 - Two scuba divers in the Garden of Eden cavern part of the cenote system on the Yucatan Peninsula of Mexico.

1387-1064 - Scuba diver in the Garden of Eden cavern part of the cenote system on the Yucatan Peninsula of Mexico.

1245-4592 - Coral Reefs Monument at the waterfront of San Miguel de Cozumel, Cozumel Island, Quintana Roo State, Mexico

1245-4531 - Kyphosus sectatrix seen during the Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico

1245-4527 - Underwater photo taken during the Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico

1245-4523 - Underwater photo taken during the Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico

1245-4522 - Underwater photo taken during the Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico

1245-4521 - Stingray seen during Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico

1245-4520 - Stingray seen during Palancar Gardens, El Cielito and Colombia Deep Reef Snorkelling Tour, Cozumel Island, Quintana Roo State, Mexico

1112-11519 - Brassy chubs (Kyphosus vaigiensis), being fed by boat operators inside the Mesoamerican Barrier Reef, Belize

1112-11517 - Soft corals and sponges underwater on Long Caye in the Mesoamerican Barrier Reef, Belize

1112-11516 - Soft corals and sponges underwater on Long Caye in the Mesoamerican Barrier Reef, Belize

1112-11514 - A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11512 - A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11511 - A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11508 - A myriad of fish and coral underwater at Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11504 - Underwater view of of the reef system at Half Moon Caye, UNESCO, Mesoamerican Barrier Reef, Belize

1112-11502 - Underwater view of of the reef system at Half Moon Caye, UNESCO, Mesoamerican Barrier Reef, Belize

1112-11489 - Green sea turtle (Chelonia mydas), feeding on the sand near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize

1112-11482 - West Indian manatee (Trichechus manatus), with snorkeler near Caye Caulker, inside the Mesoamerican Barrier Reef, Belize

1112-11475 - West Indian manatee (Trichechus manatus), with sharksucker, Caye Caulker, inside the Mesoamerican Barrier Reef, Belize

1112-11468 - Tarpon (Megalops atlaticus), underwater at feeding station inside the Mesoamerican Barrier Reef, Belize

1112-11466 - Spotted eagle ray (Aetobatus narinari), Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11463 - Southern stingray (Hypanus americanus), with snorkeler in shark and ray alley, Caye Caulker, Mesoamerican Barrier Reef, Belize

1112-11450 - Nurse shark (Ginglymostoma cirratum), on the sand in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11447 - Nurse sharks (Ginglymostoma cirratum), massing in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11445 - Nurse sharks (Ginglymostoma cirratum), massing in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11443 - Nurse shark (Ginglymostoma cirratum), with boat in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11439 - Nurse sharks (Ginglymostoma cirratum), being fed in shark and ray alley, Caye Caulker, Mesoamerican Barrier Reef, Belize

1112-11434 - Nurse sharks (Ginglymostoma cirratum), being fed in shark and ray alley, Caye Caulker, Mesoamerican Barrier Reef, Belize

1112-11433 - Nurse sharks (Ginglymostoma cirratum), being fed in shark and ray alley, Caye Caulker, Mesoamerican Barrier Reef, Belize

1112-11432 - Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11431 - Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11430 - Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11429 - Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11426 - Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11424 - Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11423 - Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11422 - Nurse sharks (Ginglymostoma cirratum), being fed in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11418 - Horse-eye jacks (Caranx latus), schooling in Hol Chan Marine Preserve, inside the Mesoamerican Barrier Reef, Belize

1112-11417 - Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize

1112-11409 - Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize

1112-11408 - Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize

1112-11407 - Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize

1112-11406 - Underwater view of the reef along the circumference of the Great Blue Hole on Lighthouse Reef, UNESCO, Belize

1265-679 - Blue ocean and sandy bottom underwater background, Thailand

1265-600 - Woman snorkeling in clear tropical sea, The Maldives, Indian Ocean

1265-599 - Snorkeling woman holding starfish underwater, The Maldives, Indian Ocean

1265-598 - Woman snorkeling in clear tropical sea, The Maldives, Indian Ocean

1265-595 - Coral reef and sea life banner, The Maldives, Indian Ocean

1112-10085 - Snorkeler with Galapagos sea lion (Zalophus wollebaeki) underwater in the Galapagos Island Archipelago, UNESCO World Heritage Site, Ecuador, South America

1387-448 - Rugged and remote, limestone islands rise around a beautiful lagoon seascape in Raja Ampat, Indonesia. This region is known as the heart of the Coral Triangle due to its incredible marine biodiversity. It is a popular destination for scuba divers and snor

1387-449 - Morning light shines on a beautiful limestone island in Raja Ampat, Indonesia. This region is known as the heart of the Coral Triangle due to its incredible marine biodiversity. It is a popular destination for scuba divers and snorkelers.

1387-210 - Fragile corals grow in extremely shallow water in Komodo National Park, Indonesia. This part of the Coral Triangle is known for its high marine biodiversity and is a popular destination for scuba divers and snorkelers.

1387-205 - A beautiful coral reef grows near a set of limestone islands in Raja Ampat, Indonesia. This remote, equatorial region is known as the heart of the Coral Triangle. It is a popular destination for scuba divers and snorkelers.

1387-206 - Forest-covered limestone islands surround a gorgeous lagoon in a remote part of Raja Ampat, Indonesia. This beautiful region is known as the heart of the Coral Triangle and is a popular destination for scuba divers and snorkelers.

1387-204 - Rugged limestone islands surround a gorgeous lagoon in a remote part of Raja Ampat, Indonesia. This beautiful region is known as the heart of the Coral Triangle and is a popular destination for scuba divers and snorkelers.

1387-202 - A large reef manta ray (Mobula alfredi) swims through clear water in Raja Ampat, Indonesia. This beautiful region is known as the heart of the Coral Triangle and is a popular destination for scuba divers and snorkelers.

1387-193 - Fragile, foliose corals grow on a beautiful reef slope in Raja Ampat, Indonesia. This remote, equatorial region is known as the heart of the Coral Triangle. It is a popular destination for scuba divers and snorkelers.

1112-9153 - Underwater view of Jellyfish Lake, a marine lake located on Eil Malk Island, Rock Islands, Palau, Micronesia, Pacific

1116-53341 - Close-up of a photographer scuba diving and looking at the camera for a self-portrait while submerged in ocean water and kelp floating behind, Vancouver Island, British Columbia, Canada

83-13395 - Ferry boats moored on the central bay of this coral fringed holiday and scuba dive destination, Bunaken Island, North Sulawesi, Indonesia, Southeast Asia, Asia

83-13391 - Divers prepare on boat off this popular coral fringed island and scuba and snorkel destination, Bunaken, North Sulawesi, Indonesia, Southeast Asia, Asia

83-13390 - Dive boat with mainland and Manadotua Island beyond, off this coral fringed holiday and scuba island, Bunaken, North Sulawesi, Indonesia, Southeast Asia, Asia

83-13388 - Dive boat with young foreign tourists and crew off coral fringed holiday and scuba island, Bunaken, North Sulawesi, Indonesia, Southeast Asia, Asia

83-13387 - Small boats moored with the mainland beyond, off this coral fringed holiday and scuba diving destination, Bunaken Island, Sulawesi, Indonesia, Southeast Asia, Asia

83-13386 - Dive boat with mainland and Manadotua Island beyond, off this coral fringed holiday and scuba island. Bunaken, North Sulawesi, Indonesia, Southeast Asia, Asia

83-13385 - Outrigger canoes and launches at this coral fringed holiday island and scuba diving destination, Bunaken Island, Sulawesi, Indonesia, Southeast Asia, Asia

83-13384 - Yohanes Church on this Christian coral fringed holiday island and scuba diving destination, Bunaken Island, Sulawesi, Indonesia, Southeast Asia, Asia

83-13382 - Men unload cargo from ferry at this coral fringed holiday island and scuba diving destination. Bunaken, North Sulawesi, Indonesia, Southeast Asia, Asia

83-13381 - The colourful jetty at this popular coral fringed holiday island and scuba diving destination, Bunaken Island, Sulawesi, Indonesia, Southeast Asia, Asia

83-13379 - Boy walks off ferry at this popular coral fringed holiday island and scuba diving destination. Bunaken, North Sulawesi, Indonesia, Southeast Asia, Asia

759-9903 - Invasive Lionfish speared by Diver, Pterois volitans, Caribbean Sea, Dominica

759-9902 - Invasive Lionfish speared by Diver, Pterois volitans, Caribbean Sea, Dominica

759-9901 - Invasive Lionfish speared by Diver, Pterois volitans, Caribbean Sea, Dominica

759-9900 - Invasive Lionfish speared by Diver, Pterois volitans, Caribbean Sea, Dominica

759-9898 - Invasive Lionfish speared by Diver, Pterois volitans, Caribbean Sea, Dominica

759-9899 - Invasive Lionfish speared by Diver, Pterois volitans, Caribbean Sea, Dominica

759-9897 - Invasive Lionfish speared by Diver, Pterois volitans, Caribbean Sea, Dominica

759-9896 - Invasive Lionfish speared by Diver, Pterois volitans, Caribbean Sea, Dominica

759-15199 - Scuba diver and Group of Longfin Batfish, Platax teira, Raja Ampat, West Papua, Indonesia

759-15198 - Scuba diver and Group of Longfin Batfish, Platax teira, Raja Ampat, West Papua, Indonesia