One time after a very cold and very short snorkelling expedition in our very cold sea water we came to find ourselves sitting on a rock near the edge of the water. Kerry-Anne felt peckish, so she plucked a plump looking black mussel from a nearby rock, opened it up, and had a little seafood snack. Even though she only ate one of the slimy little creatures, I remember her really enjoying that little morsel - even though I thought the idea was absolutely distasteful.
Given that one actually needs a permit to remove even mussels from the ocean, I have to wonder if she was breaking any laws by gobbling that little one...