Less commons species that have been spotted in the Bay of Biscay are fin whales, sperm whales, Minke whales, Risso’s dolphins and two beaked whales species in particular: the Northern bottle-nose whale and the Cuvier’s beaked whale. There have been other species sighted as well but are extremely rare to see: Sei whales, blue whales, humpbacks, Atlantic white-sided dolphins and Sowerby’s beaked whale have appeared in the bay but you will be lucky if you see any of them.
The rest of the northern coast of Spain have had sightings of 10 other species but, again, sightings have been very rare. Right whales, Trues’s beaked whales, Blainville’s beaked whales, pygmy sperm whales, dwarf sperm whales, pygmy killer whales, false killer whales, pilot whales, white-beaked dolphins and the spotted dolphins have been seen but very infrequently.