Douglas Adams wrote about his experience swimming with Manta Rays in an article which is, to me, amongst his best bits of writing (https://douglasadams.com/dna/

Douglas Adams wrote about his experience swimming with Manta Rays in an article which is, to me, amongst his best bits of writing (https://douglasadams.com/dna/980707-08-a.html https://douglasadams.com/dna/980707-08-a.html). As a kid living on a boat on the east coast of Australia I have some happy memories of watching manta rays feed at the surface nearby. Happy once I'd realised that the wing tips silently breaking the surface weren't shark fins. They really do move absurdly gracefully, unlike anything else I've ever seen in the ocean.