Sea cucumbers are part of a larger animal group or phylum called echinoderms, which also contains starfish and sea urchins. There are in total around 7,600 species recorded in this phylum, and they play an important part in the ocean’s ecosystem.
Sea cucumbers are a delicacy in the cuisine of some Asian countries, and in many regions they are an endangered species. This has led to increased interest in farming sea cucumbers to reduce the pressure on wild populations.
Sea urchins, when they proliferate, can devastate kelp forests. The need to tackle so-called “urchin barrens” has inspired one company, Urchinomics, to create facilities to farm sea urchins gathered from the seabed, removing them from the kelp.