Sea cucumber Paracaudina australis is one of many sea cucumber varieties found in the Kenjeran Waters, Surabaya or wellknown as “Blonyo”. This type of sea cucumber is widely exploited by fishermen because of the high demand and has high economic value and is traded as the main raw material to make trepang crackers.

Body tapered at both ends, thin parchment-like to soft leathery body wall, smooth. Lacking tube feet, 15 small tentacles each with 2 pairs of small digits. Off-white to pale yellow to brown colour. Up to 18 cm long. Biology