An acorn worm is a member of a class of worms, Enteropneusta, with some features of chordates.

depends on which species you are talking about - there are about 30 different "species" of Acorn worm and all are under the class hemichordata. -one of these Acorn worm is the Balanoglossus sp., the common representative organism under phylum hemichordata.

Some worms are able to drill holes into the developing acorns to lay their larvae such as the weevil worms. From there, the larvae will hatch inside the acorn, feeding on the nutmeat for three weeks.

The acorn