832-393705 - Common octopus Octopus vulgaris), mating, male on left inserts mating arm into mantle cavity on female's siphon transfers sperm-filled capsule, Red Sea, Aqaba, Kingdom of Jordan

1350-2481 - Giant clam, Tridacna gigas, siphon detail, Rongelap, Marshall Islands, Micronesia

1350-2455 - Fluted giant clam, Tridacna squamosa, siphon detail, Namu atoll, Marshall Islands (Pacific).

1350-2484 - Horseshoe clam, Hippopus hippopus, Rongelap, Marshall Islands, Micronesia

1350-2474 - Reef octopus, Octopus cyanea, eye and siphon detail, Rongelap, Marshall Islands, Micronesia

832-155875 - Antique siphon bottles, San Telmo Antiques Market, Plaza Dorrego, Buenos Aires, Argentina, South America

817-426739 - Sa Sifoneria, bar, Old Quarter, Palma, Mallorca, Balearic Islands, Spain, Europe

1004-536 - Giant Sea Cucumber Parastichopus californicus

1004-535 - Seasquirt Polycarpa aurata

1004-344 - Sea Squirt Clavelina robusta. Gili Islands, Lombok, Indonesia

1004-529 - Sea Squirt Clavelina robusta

920-2355 - Fluted giant clam (Tridacna squamosa), Rongelap, Marshall Islands, Micronesia, Pacific

920-1635 - Encrusting sponges and ascidians, St. Peter and St. Paul's rocks, Brazil, South America

920-1634 - Diver and encrusting sponges and ascidians, St. Peter and St. Paul's rocks, Brazil, South America

920-2356 - Giant clam (Tridacna gigas), Rongelap, Marshall Islands, Micronesia, Pacific

920-2367 - Small giant clam (Tridacna maxima) surrounded by lobe coral (Porites lutea), Namu atoll, Marshall Islands, Pacific

920-2307 - Reef octopus (Octopus cyanea) eye and siphon detail, Rongelap, Marshall Islands, Micronesia, Pacific

920-2353 - Fluted giant clam (Tridacna squamosa), Rongelap, Marshall Islands, Micronesia, Pacific

920-2344 - Giant clam (Tridacna gigas), Rongelap, Marshall Islands, Micronesia, Pacific

920-2351 - Giant fluted clam (Tridacna squamosa), Namu atoll, Marshall Islands, Pacific

920-2364 - Small giant clam (Tridacna maxima), Namu atoll, Marshall Islands, Pacific

920-2349 - Small giant clam (Tridacna maxima) surrounded by lobe coral (Porites lutea), Namu atoll, Marshall Islands, Pacific

920-2316 - Needle cuttlefish (Sepia aculeata) eye and siphon, Dumaguete, Negros Island, Philippines, Southeast Asia, Asia

920-1444 - Eye and siphon detail of reef octopus (Octopus cyanea), crawling over reef, Ailuk atoll, Marshall Islands, Pacific

698-2386 - Visitors walk up a spiral ramp around the cone shaped funnel in the dome cupola, which has 360 glass mirrors reflecting light into the Plenary chamber of the Reichstag building, designed by Sir Norman Foster, Berlin, Germany, Europe

698-2385 - The cone shaped funnel in the dome cupola has 360 glass mirrors reflecting light into the Plenary chamber of the Reichstag building, designed by Sir Norman Foster, Berlin, Germany, Europe

465-783 - Close-up of the mantle and siphon of giant clam, Sabah, Malaysia, Borneo, Southeast Asia, Asia