Aurelia labiata

Moon Jellies are commonly found along the coast of British Columbia. If you hop in the water off the shore, there is a good chance you will may see a Moon Jelly! These invertebrates get their name from their moon-like bell (otherwise known as their body). Their body is circular and radially symmetrical, which means that it is symmetrical on either side of the central axis – a mirror image. Moon Jellies float through the water with the current, and are often found in groups where they feed on zooplankton.
Information from E-Fauna BC: https://linnet.geog.ubc.ca/efauna/Atlas/Atlas.aspx?sciname=Aurelia%20labiata&ilifeform=73