It was a calm, glassy day so the turbulence you see was caused by hundreds of active sea lions. The sea lions covered a huge area but in the center was a calm group of animals relaxing in a drifting kelp paddy.
Zalophus californianus mega mob CLOSE 2016 09-28 SB Channel-e-016
Today a bunch of sea lions relaxed on a giant kelp paddy while all around them for hundreds of yards a thousand or so of their brothers and sisters were actively diving, feeding and jumping.
Zalophus californianus mob in giant kelp Macrocystis paddy 2016 09-28 SB Channel-304
Sea lions and dolphins have the northern anchovy aggregation pushed up against the hull of the boat as the sea lions feed.
Zalophus californianus mob feeding Engraulis mordax bait ball & passengers 2016 03-24 SB Channel-a-003
A mixed feeding group of Pacific white-sided dolphins and California sea lions.
Zalophus californianus mob & Lagenorhynchus obliquidens feeding Engraulis mordax bait ball 2016 03-24 SB Channel-a-008