I would not be able to give ten of my friends a piggyback ride at once, but maybe I could if they were all very small.  This Black Turban Snail has to deal with a problem plaguing many slow moving animals in the sea: hitchhikers.  These Crepidula Slipper Limpets are taking easy street by attaching to this Turban Snail and feeding on the plankton floating in the water.  Sounds like a good life to me!