Acanthozoon cf. fuscobulbosum
This is another one of those flatworms that has many “look-a-likes” and without a confirmation from Rene Ong, a polyclad flatworm specialist, I would still be lumping this under the broader category of Acanthozoon. This was a fast moving flatworm, found in less than 2 metres of water outside a fishpond in North Kihei, Maui. Approximate size 35 mm.