Sealife guideThe chocolate chip sea cucumberIsostichopus badionotus
Last updated on 09/03/2025 at 11:25 PM
Taxonomy
English names
Chocolate chip sea cucumberThree-rowed sea cucumberCookie dough sea cucumber
French namesConcombre de mer cookie
Spanish namesPepino de mar
Scientific nameIsostichopus badionotus (Selenka, 1867)
FamilyStichopodidae
OrderAspidochirotes
ClassHolothuroidea
Description
The chocolate chip sea cucumber has a massive cylindrical body that is beige in color, covered with a set of dark brown pustules resembling chocolate chips that protrude slightly from the surface, giving it a resemblance to a cookie, hence its french name. It can reach a length of about 12 inches when fully grown

A chocolate chip sea cucumber on the side of a shipwreck
Geographic range
The chocolate chip sea cucumber is primarily found in the tropical waters of the western Atlantic Ocean, particularly in the Caribbean Sea and the Gulf of Mexico. It is commonly found in the reefs around many Caribbean islands, such as Guadeloupe, Martinique, Saint Martin, the Virgin Islands, and many others.
Habitat
The chocolate chip sea cucumber lives on the seafloor in shallow waters of coral reefs and seagrass beds, reaching depths of up to 180 feet. Its distinctive coloration provides effective camouflage in the rocky and sandy substrates of its habitat.
Diet
Through its bioturbation, it helps oxygenate the substrate, promoting the health of benthic ecosystems. This process of organic matter breakdown makes nutrients more accessible to other marine organisms.
Additionally, the chocolate chip sea cucumber serves as a food source for various predators, including fish and invertebrates.
Reproduction
The chocolate chip sea cucumber reproduces via external fertilization, where individuals release sperm and eggs into the water column. After fertilization, the larvae undergo a planktonic phase before settling on the seafloor and transforming into juveniles.
Did you know ?
As a detritivore, the chocolate chip sea cucumber absorbs and stores toxic substances. Studies conducted in Venezuela and the Yucatán Peninsula in Mexico have shown that this species accumulates high levels of metals such as copper, nickel, lead and zinc.

The chocolate chip sea cucumber (Isostichopus badionotus)
The chocolate chip sea cucumber is listed as many other marine species within The IUCN Red List of threatened species. The chocolate chip sea cucumber appears in the IUCN Red List since 2013 within the category Least Concern !
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