Stichopus horrens looks like a sea cucumber (bilaterally symmetrical) and varies in colour from a dark brown/black to a green/yellow (Davie and Others, 2011). It has short irregular papillae or mounds on its dorsal side and grows to 100-300mm in length (Davie and Others, 2011), although they can reach up to almost 400mm (Hearn and Pinillos, 2006). The skin is quite thick and almost firm to the touch, although it disintegrates if left in the air for too long. Figure 1: The colouration and physical appearance of Stichopus horrens. The body plan of S. horrens is positioned with the mouth ventral at the opposite end to the anus (which is positioned terminally). This species has three rows of tube feet ventrally, and there are gaps present between the rows. The mouthparts are always covered from above by a piece of skin (unlike many other Holothurians). Feeding tentacles (buccal tube feet) are pale in colour and appear tree like at the end of the tentacle.