Photo of Loggerhead Turtle (Caretta caretta) and Sharksucker (Ec

080829, 37 - 48 inches, Cheloniidae, Marine Life, Reptiles, Reptilia, Sea Turtles: Testudines, adult, brown, close up, copyrighted, curious, face, head, heavy body, horizontal, landscape, loggerhead turtle: loggerhead: Carreta carreta, marine, mature, ocean, reptile, symbiotic relationship, underwater, underwater photo, yellow

Many theories exist regarding the relationship of a Sharksucker (Echeneis naucrates) to its host (the Loggerhead turtle in this case). Some believe it to be phoresy (a commensalism relationship where the host is just a means of transportation). From personal observations I believe the relationship to be one of mutualism, whereas the Sharksucker rids its host of parasites.