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Flamboyant cuttlefish Metasepia pfefferi occurs in sand and mud substrates in tropical East Indian Ocean and Western Central Pacific in a depth range from 3-86 m, max. length excluding the tentacles 6cm. This species is the only venomous cuttlefish and one of only three known venomous species of cephalopods. Males have a modified arm, a hectocotylus, specialized to transfer spermatophores to the females. To predators Flamboyant cuttlefishes display their array of colors as a warning that they are toxic. This specimen has the feeding tentacles extended. Lembeh Strait, Indonesia, 1°29'7 \
Sealife at Coral Cove Park, Tequesta, Florida
Eye level with a Dwarf (pygmy) Cuttlefish (Sepia bandensis) against a dark background. Photographed in Lembeh Strait, Indonesia.
Dead stingray fish on the shore watered by small waves on coast of  Arabic sea in Oman. Arabian Banded Whipray: Maculabatis randalli\nFamily: Dasyatidae.
Caribbean reef squid (Sepioteuthis sepioidea) in Grand Cayman - Cayman Islands
Underwater photo from a scuba dive at the Canary islands
Living coquina clams buried  in the sand at the beach in Ocracoke.
A picture of a beautiful coconut octopus
Octopus vulgaris
Extreme close up of Octopus eye and skin texture, macro underwater photography. Australia.
A small oval squid swimming in the waters of Maui
Blue Striped Tunicate Rhopalaea circula occurs in the Western Central Pacific in a depth range from 6-18m. Tunicates do not have backbones, but they are vertebrates, why? At some point in their life cycle, they have a tail, a central nerve cord, a pharyngeal gill cleft and a notochord. Often mistaken for sponges, it's simple to test: Tunicates have two siphons and when disturbed, they can rapidly close them. Palau 7°6'55.26 N 134°16'11.96 E at 25m depth, deeper than the usually noted 18m maximum depth.
Giant Cuttlefish, Sepia apama, Jervis Bay, New South Wales, Australia, South Pacific Ocean
Sea life. Octopus  Cephalopod in seashell  on  Sandy bottom. Underwater abstract. Close-up
Coconut Octopus - Amphioctopus marginatus living on the seabed. Underwater night life of Tulamben, Bali, Indonesia.
The aggregating anemone, Anthopleura elegantissima, or clonal anemone, is the most abundant species of sea anemone found on rocky Pacific coast of North America. This cnidarian hosts endosymbiotic algae called zooxanthellae.  Salt Point State Park, California.
Reef Squid can often be more active at night.  They are a amazing predator using large light sensitive eyes, colour change capabilities, and 2 long tentacles they disguise among their shorter arms to sneak up on their prey.  -British Virgin Islands
A large amount of stranded jellyfish line the sand at a beach.
Octopus vulgaris
A common cuttlefish (Sepia officinalis) in the Calanques National Park in the South of France.
A Common Octopus (Octopus cyanea) in Florida, USA
Underwater Red Scorpionfish fish deep in sea Sea life Mediterranean sea Scorpaena scrofa Scuba diver point of view
Giant Australian cuttlefish aggregate in their tens of thousands to mate in the Spencer Gulf, Australia.   Competition between males is fierce and often results expelling of ink - a defense mechanism.
Tasselled Wobbegong Eucrossorhinus dasypogon occurs in Eastern Indonesia, Papua New Guinea and Northern Australia. This ovoviviparous species can reach more than 3.5m length, common length is less than 2m. The tough skin is used sometimes for leather. \nTasselled Wobbegong is threatened by extensive coral reef habitat destruction (pollution and dynamite fishing), as well as expanding fisheries. A considerable section of its habitat is protected in the Great Barrier Reef Marine Park.\nThis specimen lies in a little cave in an outer reef at 5m depth. This shark species is primarily nocturnal. Its morning, time to have a rest.\nTriton Bay, Kaimana Regency, Indonesia, \n3°54'59.838 S 134°6'10.02 E at 5m depth
Pygmy cuttlefish, (Undetermined Sepia sp.), 15 mm in size, horizontal, profile view. It seems to be in a defensive pose.\nUnderwater macro photography taken in Lembeh, Manado - Indonesia.
Octopus in Atlantic ocean  - Playa Las Arenas, Buenavista,  Tenerife, Pond in the volcanic rock during the low tide.
Blue-ringed octopus highly venomous species ,that are found in tide pools and coral reefs
A sunburst sea anemone in a tidal pool on the coast of Newport Beach, California during the winter.
An octopus at the surface with an eye above the water swimming along the rocky foreshore of Port Tarakohe, Golden Bay, New Zealand.
Dead fish on beach
Free Images: "bestof:The cephalopods of the northeastern coast of America BHL11636645.jpg The cephalopods of the northeastern coast of America / by A E Verrill 11636645 42904 11201"
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