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Dictyota fasciola  algae from Mediterranean rocky coast
Eye level with a Lemon Shark (Negaprion brevirostris). Blue sea behind & shadow on the sea floor. Ramora (suckerfish) in attendance.
A Port Jackson Shark Swimming
Close-up of Caribbean seaweed off Akumal beach, Mexico.
An amazing sea animal - nudibranch (sea slug) - Dendrodoris tuberculosa. Underwater macro life of Tulamben, Bali, Indonesia.
View of the grey reef shark (Carcharhinus amblyrhynchos) at the Ulong Channel in Palau - Micronesia
Leafy Seadragon, Phycodurus eques, from  Western Australia.
Underwater photo from a scuba dive in the Red sea.
amazing inhabitants of the microworld under a microscope
Underwater environment beneath the ocean surface with seaweed and kelp beds.
Leaf of bladderwort, Utricularia vulgaris, a carnivorous plant at Mud Pond in Sunapee, New Hampshire.
Frozen tree leafs in forest. Top view. Top view.
Picture shows a lemon shark during a scuba dive
View of the grey reef shark (Carcharhinus amblyrhynchos) in Palau - Micronesia
Glaucus atlanticus Forster, 1777
Anthopleura xanthogrammica, or the giant green anemone, is a species of intertidal sea anemone of the family Actiniidae. Other  names for this anemone include green surf anemone, giant green sea anemone, green anemone, giant tidepool anemone, anemone, and rough anemone.  Salt Point State Park, California.
Common seadragon or weedy seadragon is a marine fish related to the seahorse. Adult common seadragons are a reddish color, with yellow and purple markings. Some have small leaf-like appendages that look like kelp. This provides protection from any enemy. They are related to the seahorse. This image was shot with a Nikon D3s camera and with a Tamron 16 - 300mm lens.
Close up of juvenile Great White Shark swimming through murky water hunting for prey. Photographed at Neptune Islands, South Australia.
A pair of Caribbean reef sharks in the Bahamas
On the ocean floor of the Indo-Pacific Ocean
Close up of Bladderwrack seaweed on sea rock. Fucus vesiculosus
Low angle view of dangerous shark
Underwater image of Caribbean Reef Sharks
Ricordea Mushroom (Ricordea yuma)
An image of several large rocks covered in thick green sea grass at low tide.
Wet shiny seaweed on the Thames estuary
An Angular Roughshark in Marmara Sea in Istanbul
Celestial Phyllidia Phyllidia coelestis occurs in the tropical Indo-West Pacific from South Africa to the South China Sea and Australia to Fiji and from Philippines to Vanuatu, max. length 6cm. The species has the mating behavior of the members of the order Nudibranchia; they are simultaneous hermaphrodites: both individuals darts their penis toward each other to induce one to act as a male and the other as the female. The victorious one to penetrate the body wall is the dominant male. Thats how simultaneous hermaphroditism works. Palau 7°5'12.18 N 134°15'34.77 E at 4m depth
close-up of coastal algae
Euphyllia ancora,  Fimbriaphyllia ancora or Euphyllia ancora,  is a hard coral. Euphylliidae. It is known by several common names, including anchor coral and hammer coral, or less frequently as sausage coral, ridge coral, or bubble honeycomb coral. Indo-Pacific ocean.
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