I didn't watch it all, but frankly, I'm mot impressed. A lot of the coastline here in SoCal is rather bare, but that is because a lot of it, especially where accessed by large numbers of beach goers, gets hammered rather hard.

Out on the Channel islands, tide pools are doing much better. We don't have the abalone that abounded in the 1980s, but survival is pretty easy along the coast of the islands - lots of limpets and mussels (except during the red tide season).

BTW, a long term tide pool monitoring program is in place within Channel Islands National Park. It has been in effect since sometime in the 1980s. Precise numbers are available on tidal species as well as other animals within the park, like the pinnipeds (seals, sea lions, and the like).