Group of at least eight killer whales (Orcinus orca) surfacing off the coast of the island of Surtsey, southern Iceland

killer whales orcinus orca southern iceland surfacing group ocean wildlife marine biology nature cetaceans surtsey mammals life swimming conservation aquatic oceanic behavior environment waves sea animals natural habitat ecosystem hunting playful fin underwater coast species biodiversity northern hemisphere cold water skimming pods social tracking navigation cetology feeding observation coastal waters