A Review on Knowledge and Research of Interstitial Sea Cucumber

The interstitial environment of sandy bottoms is an enigmatic habitat that forms unique ecosystems containing significant numbers of biodiversity. One of the lesser known marine invertebrate that inhabit this environment are sea cucumbers. The relative scarcity and lack of attention paid on these species have been the main obstacles to research and hence, knowledge of their taxonomy, biology, and ecology is limited. Thus, this review attempts to summarize the up-to-date overview of available knowledge on the diversity, distribution and the biology of interstitial sea cucumbers.