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

killer whales orcinus orca surfacing surtsey iceland ocean wildlife marine life pod dorsal fins water behavior swimming coastal southern nature animal cetaceans sea mammals ecology mammal group oceanography aquatic pelagic biodiversity natural habitat watching conservation observation ecosystem behavioral study social structure cetology sanctuary waters recreational boating whale environment ecological aerial