I have no idea what this is. It was about 15x10 cm and had bumps on the surface. Also some movement, like a mollusk or worm. Stuck to rocks along seashore, exposed during low tide.
Lamprea capturada por lobo marino de un pelo
Se observa bolsa gular terminando en la primera hendidura branquial.
Lamprea de bolsa, Geotria australis, pertenece al Familia Petromyzontidae. Esta especie, se caracteriza principalmente por presentar en estado adulto, una bolsa gular ( en la garganta) que se ubica desde el borde posterior del disco bucal hasta la primera abertura branquial, se observa bien desarrollada en los machos y ligeramente desarrollada en las hembras (http://www.sernapesca.cl/sites/default/files/importacion/rescateyconservacion/fichasespecies_conservacion/peces_dulceacuicolas/lampreadebolsaanguilablanca.pdf)
Fotografía: Richard Wells
Still photo taken from video of lamprey, first I've seen on West Coast
Caught and released this adult while doing fish salvage. About 400mm long on the Kahutara river. Didnt realise that had a single nares on the top of the head.
Under a rock
An adult lamprey spotted on its return to the river to breed.
Apparently Geotria australis?