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View of the Caribbean coral reef with the yellow tube sponge in Grand Cayman - Cayman Islands
A large barrel sponge, Xestospongia testudinaria, grows on a reef slope near Komodo National Park, Indonesia. These large filter feeders are common throughout Indo-Pacific reefs.
Sea Sponge, Coral Reef, Caribbean Sea, Playa Girón, Cuba, América
Close up of bright orange soft coral head pattern underwater, Great Barrier Reef, Queensland.
closeup view of organ pipe coral in the reef
Underwater portrait of a scuba diver with full professional photo equipment under the sea.
Giant Sponges can grow to impressing size. These specimen of filter animals live under a rock overhang at the north side of Rozengain Island, Banda Sea, Indonesia, 4°34'41.37 S 130°1'40.194 E at 20m depth
front view closeup of dark coral reef formation on the ocean floor
Colorful, picturesque coral reef at the bottom of tropical sea, great sea tube sponge, underwater landscape
Sea life Orange sea sponge aquatic organism, Red Hard coral and Yellow Tube sponge from scuba diver point of view Underwater photo
View of the Caribbean coral reef with the yellow tube sponge and female diver in Cayman Brac island - Cayman Islands
A starfish on algae at the bottom of the sea, îlets pigeon
Blurred coral texture as a background.
Undersea and sponge
Underwater photo from a scuba dive off the coast of the island Koh Lipe
Petrosia hoeksemai (family Petrosiidae) occurs in the Indonesian Western Central Pacific in a depth range from 3 to 20m. \nEven if the shape is very different from Giant Barrel Sponge Xestospongia testudinaria, the two species are closely related.\nBanda Island, between Lavaflow 2 and 3, Indonesia, \n4°30'21.233 S 129°52'33.819 E at 16m depth
coral reef with beautiful great orange sponge on the bottom of tropical sea  on blue water background
Sea life  Yellow soft coral symbiotic relationship with sponge Aquatic organism Close up, macro photo. Scuba diver point of view
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Caribbean coral reef in Little Cayman - Cayman Islands
Caribbean coral reef off the coast of the island of Roatan
Sea sponge in the clear Carrebbean sea near Cayman Islands.
Coral, (Ramaria stricta), aquarium, Baska island of Krk, Croatia, Kvarner Gulf, Adriatic Sea, Croatia
Hin Daeng (Red Rock) is one of Thailand’s most famous dive sites in the Andaman sea.  Famed for it’s pristine coral reefs and clear waters.
Colorful, picturesque coral reef at bottom of tropical sea, soft coral Sarcophyton, underwater landscape
Mushroom leather coral,  Coral reef  soft coral Scuba diving  Underwater Sea life  \ncorals propagated
An underwater photo of a sponge.
Giant Barrel Sponge Xestospongia testudinaria occurs widely distributed in the tropical Indo-Pacific in a depth range from 2-50m. Specimen in the intertidal zones remain small with 10-20cm diameter, below they can grow to impressing sizes, measuring up to 2.4 meters in height and width.  \nThe sponge is covered with several Sea Cucumbers Synaptula lamperti, found in the Western Pacific including the coasts of Indonesia, Papua New Guinea, Micronesia and the Philippines. The species is very common on coral reefs, both on the exposed and the inner slopes. It is a detrivore that specifically feeds on or around living sponges. \nConsidering the sea cucumbers maximum size of 20cm, the barrel sponge might extend more than 1m from the reef slope.  \nBanda Island, Indonesia, 4°30'45.41 S 129°56'7.75 E at 13m depth
The giant barrel sponge (Xestospongia muta) and a female diver in Little Cayman - Cayman Islands
Yellow tube sea sponge - Aplysina aerophoba, underwater image into the Mediterranean sea
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