Two clusters on the edge of very rotten giant kelp frond. About 1/3" long, but they reminded me of the much larger parasites sometimes found on whale flukes.
Thanks to the colleagues from IMARPE, Peru, especially to Dr. Javier Quiñonez
4 to 5 Ind, same spot as before, 8-10m on rock
Observation is not the Beluga - Captured as part of the Beluga Bits Project (https://www.zooniverse.org/projects/stephenresearch/beluga-bits) - date is approximate.
Pacific Sea Gooseberry? Not sure if there are other species around here. I spotted about 25 of these in the wrack line. They ranged from 1-2.5cm