Isostichopus fuscus, commonly known as the brown sea cucumber, is a species of sea cucumber in the family Stichopodidae native to the eastern Pacific. It was first described to science by German biologist Hubert Ludwig in 1875. It has a thick dermis without any spikes, making it an easily edible species and thus it is harvested for export to East Asia, where sea cucumber is popular in some cuisines. The fishery is typically conducted in an unsustainable manner, mostly in North and South America, which has caused the populations to decline. The brown sea cucumber is classified by the IUCN as Endangered.

Isostichopus fuscus. Retrieved November, 05 2021, from en.wikipedia.org/wiki/Isostichopus_fuscus.