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Sea Cucumbers
Sea cucumbers (class Holothuroidea) are in the phylum Echinodermata. They are often confused with sea slugs because of their elongate, "slug like" shape and are referred to by the common name "sea slug" in some other regions of the Indo-Pacific. Like other echinoderms, they have calcareous spicules or plates in their body walls and most move be means of many small tube feet. The mouth is surrounded by a ring of branched tentacles used to collect the detritus that they eat and they often deposit a string of sausage-like fecal pellets. Some species eject sticky white tubules from the anus when disturbed (as a defensive measure).

A few of the species most frequently mistaken for sea slugs:
Actinopyga varians
Actinopyga varians
CP: Hekili Point, Maui;
April 12, 2008

Holothuria atra
Holothuria atra
CP: Hekili Point, Maui;
April 10, 2008

Holothuria hilla
Holothuria hilla
CP: Hekili Point, Maui;
April 10, 2008

Holothuria impatiens
Holothuria impatiens
CP:
June 11, 2003

Polyplectana kefersteini
Polyplectana kefersteini
CP:
March 20, 2005

Stichopus horrens
Stichopus horrens
CP: Hekili Point, Maui;
April 6, 2008

For more information see:
 
John Hoover's sea cucumber page
 
Keoki Stender's sea cucumber page
 
Gustav Paulay's Guam sea cucumbers
 
Sea cucumbers on the Sea Slug Forum
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