Pseudocerotidae are simple organisms categorized by their oval bodies and tentacles[7] and bright colors.

[8] Most commonly referred to as marine flatworms, closely related to the orders Macrostomorpha and Lecithoepitheliata.

This is why their diet is composed of scavenging for various sponges, other stationary or dead invertebrates.

[14] Polycladia are typically distinguished by their hermaphroditic reproductive system and their external anatomy such as their eyespot arrangement, pharynx and tentacles.

The egg capsules produced are most commonly smooth and round, except for a few species where they have pointed opercula.