Yarrell's blenny has very distinct bushy tentacles above each eye and it has an eel-like body. It can grow up to 25 cm. The male blenny has additional bushy tentacles on the front of the dorsal fin. This blenny has a more northern distribution and can be found up here in Saltstraumen.
Photo: Vebjørn Karlsen, Camera: Nikon D700, Lenses 105 mm macro. Two flashes.