Editing Sea cucumber (section)

=== Development ===
In all other species, the egg develops into a free-swimming [[larva]], typically after around three days of development. The first stage of larval development is known as an '''auricularia''', and is only around {{convert|1|mm|mil|lk=out|abbr=on}} in length. This larva swims by means of a long band of [[cilia]] wrapped around its body, and somewhat resembles the [[bipinnaria]] larva of starfish. As the larva grows it transforms into the '''doliolaria''', with a barrel-shaped body and three to five separate rings of cilia. The '''pentacularia''' is the third larval stage of sea cucumber, where the tentacles appear. The tentacles are usually the first adult features to appear, before the regular tube feet.<ref name=IZ/>