Kwaj Invertebrates

This page presents various invertebrate animals we have seen in the Marshall Islands, mostly at Kwajalein but some at other atolls such as Enewetak, Bikini, Rongelap, Utirik, Ujelang and Namu. Click the thumbnail to proceed to a thumbnail menu for members of that group. For fish, go to the Kwaj Fishes menu, or for more general scenic underwater photos of coral reefs, see the Scenery pages. More groups will be added as time permits. Recent updates to these pages are listed here.

Protozoans and Sponges

Foraminifera

Sponges

Cniderians (corals and their relatives)

Jellyfish	Hydrocorals	Hydroids
Anemones	Reef building corals (in process)	Soft corals (Alcyonacea)
Blue coral (Heliopora)	Black corals (Antipatharia)

Flatworms

Flatworms

Ribbon Worms

Annelid and Sipunculan Worms

Polychaetes

Marine Leeches and Flukes

Sipunculans (Peanut Worms)

Lophophorates (Phoronids, Brachiopods, Bryozoans)

Phoronids (Horseshoe Worms)	Brachiopods	Bryozoans
Entoprocts

Mollusks

Nudibranchs and Sea slugs	Living Seashells	Clams (bivalves)
Chitons	Octopus, Squid, Cuttlefish

Crustaceans

Lobsters and their relatives	Mantis shrimp	Shrimp
Hermit crabs	Anomuran crabs (minus hermits)	Brachyuran crabs
Sea Spiders	Barnacles	Copepods
Amphipods & Isopods

Echinoderms

Brittlestars	Sea Cucumbers	Seastars
Sea Urchins	Crinoids - Feather Stars

Acorn Worms and Tunicates

Acorn Worms

Tunicates

Kwajalein Underwater home

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