<P> Remora front dorsal fins have evolved to enable them to adhere by suction to smooth surfaces and they spend their lives clinging to a host animal such as a whale , turtle , shark or ray . It is probably a mutualistic arrangement as the remora can move around on the host , removing ectoparasites and loose flakes of skin , while benefiting from the protection provided by the host , and the constant flow of water across its gills . Although it was initially believed that remoras fed off particulate matter from the host 's meals , this has been shown a falsehood ; in reality their diets are composed primarily of host feces instead . </P>
<P> Remora front dorsal fins have evolved to enable them to adhere by suction to smooth surfaces and they spend their lives clinging to a host animal such as a whale , turtle , shark or ray . It is probably a mutualistic arrangement as the remora can move around on the host , removing ectoparasites and loose flakes of skin , while benefiting from the protection provided by the host , and the constant flow of water across its gills . Although it was initially believed that remoras fed off particulate matter from the host 's meals , this has been shown a falsehood ; in reality their diets are composed primarily of host feces instead . </P>
what are the fish that are on sharks
what are the fish that are on sharks
Remora
Remora