• Holothuria is commonly known as ‘Sea Cucumber’.

• Body wall is thick and leathery, without spines, arms, ambulacral grooves and pedicellariae.

• Tube feet (locomotion) absent.

• Numerous warty/papillate projections seen.

• Respiration through cloacal respiratory tree.

• Self defense by autotomy and evisceration.

• Expulsion of toxic filaments known as holothurin during dangerous situation.

• Development indirect with auricularia and doliolaria larvae.