 As a response to this "ecological emergency", widespread culling of sea urchins has been advocated in some areas.Marine mammals of the Canary Islands include varieties of cetaceans, such as rorquals (not much known about their distributions in northeastern Atlantic), sperm whales, "Kogia", little known beaked whales, orcas, the short-finned pilot whales, false killer whales, Risso's dolphins, common and bottlenose dolphins.Vagrant hooded seals also appear every now and again.