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Frank Baensch

Fish Culture and Underwater Photography

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Marine Invertebrates

Home / Marine Life Galleries / Marine Invertebrates

2 March 2019April 16, 2019

Emperor shrimp (Periclimenes imperator) lives commensally on a number of hosts, including this sea slug: Hexabranchus. Philippines.

Photos about Marine Invertebrates:

Juvenile cuttlefish. Papua New Guinea.

Nudibranch (Chromodoris lochi). Philippines.

A mantis shrimp (Odontodactylus scyllarus) peers out of its den. Indonesia.

Blue starfish and soft coral reef scene. Indonesia.

A bright orange bristle star on a soft coral. Tonga.

Nudibranch (Flabellina sp.). Indonesia.

Juvenile Hawaiian Saron shrimp (Saron marmoratus) collected as postlarva, raised in my aquarium and photographed in the studio. Hawaii.

Larval squid releasing ink. Papua New Guinea.

Green-eye dancing shrimp (Cinetorhynchus sp.). Fiji.

Dozens of starfish cover a sand bed at Cocos Island. Costa Rica.

Emperor shrimp (Periclimenes imperator). Philippines.

Two fairy crabs (Lauriea siagiani). Papua New Guinea.

Crinoid shrimp (Hippolyte catagrapha). Philippines.

Nudibranch (Nembrotha kubaryana). Papua New Guinea.

Squid larva - 12.6 mm TL. Papua New Guinea.

Emperor shrimp (Periclimenes imperator) lives commensally on a number of hosts, including this sea slug: Hexabranchus. Philippines.

Flabellina nudibranch. Philippines.

Porcelain anemone crab (Neopetrolisthes maculosus) on a carpet anemone. Indonesia.

Two giant basket stars (Astrophyton muricatum) at night. Indonesia.

Yellow spotted guard crab (Trapezia flavopunctata) collected as postlarva, raised in my aquarium and photographed in the studio. Hawaii.

I found a large aggregation of several hundred moon jellyfish in the lee of a small island in open ocean. Moon jellyfish aggregate under favorable (slack current) conditions to reproduce sexually. Solomon Islands.

A sea cucumber (Holothuroidea sp.) extends off the reef and releases gametes in the current.

Atlantic triton's trumpet (Charonia variegata) feeding on a cushion sea star (Oreaster reticulatus). Sea stars are the triton’s primary prey item. A trumpet snail paralizes its prey with an injection of toxic saliva, and then bores through the body with its strong teeth. Adult trumpets are heavily collected for their beautiful shells, which has allowed sea star populations to proliferate in recent years. Bahamas.

Octopus larva - 9.5 mm TL. Papua New Guinea.

California spiny lobster (Panulirus interruptus). California.

Emperor shrimp or Imperial shrimp (Periclimenes imperator) lives commensally on a number of hosts, including this sea slug: Hexabranchus. Philippines.

Mating nudibranchs (Nembrotha lineolata). Indonesia.

Harlequin shrimp (Hymenocera elegans) feeding on a sea star (Linkia sp.). Indonesia.

Starfish. Papua New Guinea.

A flamboyant cuttlefish (Metasepia pfefferi) lifts off from the muck in search of food. Indonesia.

Mantis shrimp larva - 65.0 mm TL. Papua New Guinea.

Fairy crab (Lauriea siagiani). Papua New Guinea.

Bristle star and crabs on a soft coral. Papua New Guinea.

Brain coral (Leptoria phrygia) pattern. Bahamas.

Giant marine hermit crab (Petrochirus diogenes ) on a wreck in the Bahamas.

Coral pattern. Palau.

A close-up of the of the red pencil urchin's (Heterocentrotus mammillatus) spines and skeleton (test). Hawaii.

Squat lobster on a sponge. These decapod crustaceans are not lobsters at all, but are more closely related to porcelain crabs, hermit crabs and then, more distantly, true crabs. Halmahera, Indonesia.

Crinoid shrimp (Hippolyte catagrapha). Philippines.

Juvenile squid schooling at night. Florida.

A spotted spiny lobster (Panulirus guttatus). Bahamas.

Saron shrimp (Saron marmoratus). Saron shrimps are quite variable in color and pattern. They may have greenish, brown, or even red, purple or blue markings. Ambon, Indonesia.

Crab megalopa collected in an egg tow. Hawaii.

Soft coral crab (Hoplophrys oatesi). Indonesia.

Collected pelagic copepod (Sapphirina sp.) - 4.5 mm TL. Hawaii.

A crinoid (Crinoid sp) looking stylish at night. Indonesia.

Humpback shrimp (Saron sp.). Fiji.

Peacock mantis shrimp (Hemisquilla ensiger). Papua New Guinea.

A pair of harlequin shrimps (Hymenocera elegans) feeding on a starfish (Linkia sp.) in Indonesia.

Juvenile octopus reflects off the surface (Octopus sp.) in Papua New Guinea.

Anemone hermit crab (Dardanus pedunculatus). Indonesia.

Two bubble coral shrimp (Vir philippinensis) in an anemone. Papua New Guinea.

Barred wire coral shrimp (Pontonides sp.). Fiji.

Nudibranch (Chromidoris sp.). Philippines.

Squid (Cephalapod sp.) under rain drops. Palau.

Crown jellyfish (Cephea cephea) off Oahu, Hawaii. Crown jellyfish have a deep groove running around the bell, giving them the crown shape from which they take their name. Hawaii.

Two soft corals attached to a giant giant clam (Tridachna gigas) in Palau.

A swimming bristle worm at night. Indonesia.

Swimming pelagic marine copepod (5.7 mm). Hawaii.

A banded coral shrimp (Stenopus hispidus) in the Bahamas.

A spotted cleaner shrimp (Periclimenes yucatanicus) in a pink-tipped anemone. Bahamas

Yellow crinoid shrimp. Indonesia.

Crab close up. Indonesia.

Reef squid in defense posture on a blackwater dive. Solomon Islands.

Head on shot of painted spiny lobster (P. versicolor). Fiji.

Collected pink jellyfish (Pelagia species). Hawaii.

A reef squid on a bonfire dive in the Solomon Islands.

Bird's eye view of painted spiny lobster (Panulirus vesicolor). Indonesia.

Head on shot of spiny tiger shrimp (Phyllognathia ceratophthalmus). Indonesia.

Juvenile banded mantis shrimp (Lysiosquilla maculata) reflecting off the surface on a blackwater dive in Palau.

Crab on a softcoral. Papua New Guinea.

Crown jellyfish (Cephea cephea) on a night dive. Crown jellyfish have a deep groove running around the bell, giving them the crown shape from which they take their name. Hawaii.

A cuttlefish (Sepia officinalis) at dusk.

Nudibranch (Nembrotha sp.) on a tunicate. Indonesia.

Spider crab (Hyastenus bispinosus) on gorgonian. Fiji.

A reef squid (Sepioteuthis sp.) in full irridescence. Cephalopods create this amazing camouflage using specialized color changing cells (chromatophores) and reflecting cells (iridocytes) in the skin. Indonesia.

Over-under scene of jellyfish under mangroves in Palau.

An octopus larva hitches a ride on a leaf on a blackwater dive in the Solomon Islands.

Nudibranch (Chromodoris michaeli). Philippines.

Reef Squid (Sepioteuthis sp.). Like all cephalopods, squid have a distinct head, bilateral symmetry, a mantle, and eight arms. There are around 300 species of squid. Indonesia.

Saron shrimp (Saron sp.) in a crevice. Papua New Guinea.

Collected sea swallow (Glaucus atlanticus), a pelagic aeolid nudibranch. Hawaii.

Reef squid (Cephalapod sp.). Palau.

Common octopus (Octopus vulgaris) out and about on a colorful reef. Indonesia.

Collected blue pelagic shrimp. Hawaii.

Squat lobster in a crinoid. Indonesia.

Anenome shrimp (Periclemenes sp.). Indonesia.

Crab larva hitching a ride inside ctenophore. Hawaii.

Decorator crab. Indonesia.

Crab on dendronephthya soft coral. Indonesia.

Head shot of a pelagic shrimp. Hawaii.

Octopus larva - 9.5 mm TL. Papua New Guinea.

Flabellina iodinea nudibranch. California.

Lobster larva near settlement. Indonesia.

Head on shot of peacock mantis shrimp (Hemisquilla ensigera californiensis) carrying a large clutch of eggs. Philippines.

Emperor shrimp (Periclimenes imperator) on a sea cucumber. Indonesia.

Squid larva feeding on a larval mantis shrimp. Solomon Islands.

Pyrosome at night. Pyrosomes are actually free-floating colonial tunicates made up of hundreds to thousands of individuals, known as zooids. California.