Species by Order: Hydrozoa: Anthoathecatae

Natural History
Polyorchis haplus

Commonly called a bell jelly.

Polyorchis penicillatus

Commonly called a bell jelly.

Scrippsia pacifica

This species closely resembles Polyorchis penicillatus, although it can reach a larger size.  Commonly called the giant bell jelly.

Velella velella

Called  the "by-the-wind sailor."  Generally floats offshore but can be blown onshore in large numbers.