We asked you to share your photos taken underwater via GuardianWitness. From an enigmatic dugong to turtles going head to head, here is a selection of your best pictures
Dave Johnson: This is one of the enigmatic dugongs that roam the Red Sea around Marsa Alam in south-east Egypt. They are solitary creatures and are usually seen feeding among the sea grass in the various coral fringed bays. This one was over deep water at Marsa Mubbarak.Photograph: Dave Johnson/GuardianWitnessE Wallace: My fourth visit to the same coral and a pygmy sea horse finally looked at me!Photograph: ewallace/GuardianWitnessDan Massie: Frogfish use their lure to attract their prey. I waited quite some time for this one to launch its lure and open its mouth wide open.Photograph: danmassie/GuardianWitnessDavid Portman:Grey reef sharkPhotograph: David Portman/GuardianWitnessJames Hardcastle: Green turtles near Lady Elliot Island on the Great Barrier Reef. These two males charged each other and were pecking away, really bad-tempered. I happened to be in the middle, and they completely ignored me. Lady Elliot Island has very accessible lagoon and coral heads and is inhabited by turtles year round. Manta ray, sharks and large grouper are also highlights. In spring, the sound of whales cruising past the island provides a unique underwater chorus.Photograph: jameshardcastle2012/GuardianWitnessKhaled Mahgoub: I took this shot of a scary stonefish when I was working in Nuweiba in the Sinai, Egypt, as a dive instructor. I found it on a dive site called the Pipe Line. Photograph: Khaled Mahgoub/GuardianWitness ID306923: Anemone fishPhotograph: ID306923/GuardianWitnessRichard Littlewood: A smiling moray eel, taken with an Olympus camera up nice and close with a flash. Photograph: Richard Littlewood/GuardianWitness naushad1slanddivers: A snorkeller with a whale shark in the Maldives. Photograph: naushad1slanddivers/GuardianWitnessDavid Jones: The aptly named crocodile fish lies motionless on this piece of wreckage. Photograph: David Jones/GuardianWitnessE Wallace: A mantis shrimp taken in shallow water at the end of the dive. Photograph: ewallace/GuardianWitnessDavid Jones: In Akumal lagoon in Mexico turtles feed on the sea grass. Every now and then they come up for air, and if you are lucky you can get a half-and-half shot. Photograph: David Jones/GuardianWitness
