velella, sea raft, by-the-wind sailor, purple sail, little sail, death on the beach

alian beach beached biology blue brown clear cnidarians coast death fin foreshore group hydrozoa hydrozoan jelly jellyfish life little lot lots many marine medusas millions much nature ocean plankton pleuston predator purple raft rotting sail sailor sand sea shore shoreline slimy strange tentacles the travel unusual velella weird wind