On Bardsey Island in Wales, the grey seals lounge on the winter beaches. In December of 2015, local wildlife photographer and naturalist Ben Porter filmed the seals on the sand and in the sea foam that’s sometimes caused by stormy conditions. Wales Online explains:

Seawater contains dissolved salts, proteins, fats, dead algae, and when these are all churned together by breaking waves and tides, the foam, which looks a lot like bubble bath, is created.

Is that a beach boulder or a grey seal in the seafoam?

More: Grey seals on the foamy beaches of Bardsey Island | The Kid Should See This