Stephenson's Sea Cucumber

Roweia stephensoni

Stephenson's sea cucumber, belonging to the genus Roweia, is a holothurian echinoderm that can be recognized by its elongated, soft body. This species typically reaches a maximum length of about 9.5 cm, although common individuals may be around 1.0 cm long. It is found in the tropical waters of Southern Africa and Southeastern Asia, inhabiting benthic environments. Divers may encounter this species at various dive sites, as it has been recorded at multiple locations near DiveSight dive sites. These sea cucumbers are bottom-dwelling organisms that feed on detritus, which includes organic matter and small particles that accumulate on the sea floor. They play a vital role in their ecosystem by recycling nutrients and contributing to the health of the benthic environment. The breeding habits of Roweia stephensoni involve external fertilization, with gonochoric reproduction, meaning individuals have distinct male and female sexes. When divers come across Stephenson's sea cucumber, they may observe it resting on the substrate, often blending in with its surroundings. These creatures tend to be slow-moving and can be somewhat shy, making them less likely to flee when approached. Their presence is generally not alarming, and they contribute to the overall biodiversity of the marine environment. As of now, the conservation status of this species has not been evaluated by the IUCN.