The shell of Hawaiian reef lobster (Enoplometopus occidentalis), covered in algae and parasitic barnacles, Hawaii, United States of America, Pacific, North America

A juvenile painted spiny lobster, Panulirus versicolor, inhabits a crevice on a reef amid the tropical islands of Raja Ampat, Indonesia.

A Caribbean reef octopus (Octopus briareus) explores the seafloor of a shallow reef off the coast of Belize. This intelligent cephalpod ranges throughout the Caribbean feeding on lobster, crab, and small fish.

A juvenile painted spiny lobster, Panulirus versicolor, crawls out of a reef crevice amid the islands of Raja Ampat, Indonesia.

An adult sculptured slipper lobster (Parribacus antarcticus), encountered on a night dive on Arborek Reef, Raja Ampat, Indonesia, Southeast Asia, Asia

Reef lobster (Panullirus argus) at night, Ilha do Meio, Fernando de Noronha national marine sanctuary, Pernambuco, Brazil, Atlantic

Hawaiian reef lobster, endemic, Enoplometopus occidentalis, Portlock, Oahu, Hawaii (N. Pacific)

Stripe-leg spiny lobster, Panulirus femoristriga, eye and rostrum detail, Short drop-off, Palau, Micronesia.

Brook's urchin shrimp, Allopontonia brookia, in a fire urchin, Asthenosoma ijimai, Komodo National Park, Nusa Tenggara, Indonesia, Pacific Ocean

Ridgeback Slipper Lobster (Scyllarides haanii) hiding in its lair between lava rocks on Molokini Crater's backwall offshore of Maui; Molokini Crater, Maui, Hawaii, United States of America

Crinoid Squat Lobster (Allogalathea Elegans), Moalboal, Cebu, Central Visayas, Philippines

Hawaii, Regal Slipper lobster (arctides regalis), Close-up of face.

Hawaii, Regal Slipper lobster (arctides regalis) hiding in reef.

Bug-eye Squat Lobster (Neomunida olivarae), also known as a colored squat lobster or the google-eyed fairy crab, Dumaguete, Philippines

Both a Crinoid Commensal Shrimp (Periclimenes cornutus) and a Crinoid Squat Lobster (Allogalathea elegans) on a crinoid. These tiny crustaceans are commensal on crinoids or feather stars and take their color from the host, Philippines

The Hairy Squat Lobster (Lauria slagiani) is found alone, and in pairs, on the outside of barrel sponges belonging to the genus Xestospongia. They are tiny (one centimeter across) and difficult to find on the folds of the sponge, Philippines

Hawaiian lobster, front view (Enoplometopus occidentalis)

Reef Spider Crab, Mithrax spinosissimus, Cozumel, Caribbean Sea, Mexico

slipper lobster slipper lobster on reef portrait Spain (Scyllarides latus)

Goliath grouper (Epinephelus itajara) catching a lobster on a coral reef, Jardines de la Reina National Park, Cuba.

Pink squat lobster, Papua New Guinea