Espen Bergersen / Humpback whale (Megaptera novaeangliae) feeding around herring fishing vessel. Kvanangen, Troms, Norway. November

Espen Bergersen / Herring boat with net full of Herring (Clupea harengus). Killer whales / orcas (Orcinus orca) feeding around the boat. Troms, Norway.

Mark Carwardine / Killer whale or orca (Orcinus orca) lob tailing neqar freight ship, Salish Sea, Vancouver Island, British Columbia, Canada

Mark Carwardine / Killer whale or orca (Orcinus orca) swimming near freight ship, Salish Sea, Vancouver Island, British Columbia, Canada

Mark Carwardine / Killer whale or orca (Orcinus orca) surfacing next to BC Ferry. Salish Sea, Vancouver Island, British Columbia, Canada

Richard Robinson / Pelagic Bottlenose dolphin (Tursiops truncatus ) rides the bow of a Maersk container ship, Northern New Zealand Editorial use only.

Espen Bergersen / Killer whale (Orcinus orca) male surfacing with Herring gulls (Larus argentatus) with fishing boat in background. Kvaloya, Troms, Norway, November

Espen Bergersen / Fisherman watching Killer whale (Orcinus orca) male surfacing with Herring gulls (Larus argentatus) Kvaloya, Troms, Norway, November

Espen Bergersen / Humpback whales (Megaptera novaeangliae) caught inside the fishnet, they after Herring (Clupea harengus) being fished by boat but they did escape the net after feeding, Kvaloya, Troms, Norway November

Hanne & Jens Eriksen / Sperm whale (Physeter macrocephalus) with tanker in background, Oman, November

Hanne & Jens Eriksen / Indian Ocean bottlenose dolphin (Tursiops aduncus) jumping in front of ship , Oman, November

Hanne & Jens Eriksen / Indian Ocean bottlenose dolphin (Tursiops aduncus) jumping in front of ship, Oman, November