Mark Carwardine / Fin whale (Balaenoptera physalus), two feeding, aerial view. Baja California, Mexico. March.

Espen Bergersen / Aerial view of Fin whale (Balaenoptera physalus). Kvanangen, Troms, Norway. November

Mark Carwardine / Aerial view Fin whales (Balaenoptera physalus) lunge-feeding in the southern Sea of Cortez (Gulf of California), Baja California, Mexico.

Mark Carwardine / Aerial view of Fin whale (Balaenoptera physalus) lunge-feeding, with throat pouch distended, southern Sea of Cortez (Gulf of California), Baja California, Mexico.

Mark Carwardine / Aerial view of Fin whale (Balaenoptera physalus) lunge-feeding, with mouth open and throat pouch distended, southern Sea of Cortez (Gulf of California), Baja California, Mexico.

Mark Carwardine / Aerial view Fin whales (Balaenoptera physalus) lunge-feeding in the southern Sea of Cortez (Gulf of California), Baja California, Mexico.

Mark Carwardine / Aerial view Fin whales (Balaenoptera physalus) lunge-feeding in the southern Sea of Cortez (Gulf of California), Baja California, Mexico.

Luis Quinta / Fin whale (Balaenoptera physalus) Pico Island, Azores, Portugal. May.

Luis Quinta / Fin whale (Balaenoptera physalus) near surface. Pico Island, Azores, Portugal. May.

Ben Cranke / Fin whale (Balaenoptera physalus) surfacing with mountain landscape, Liefdefjorden, Svalbard, Norway. July 2011.

Hanne & Jens Eriksen / Fin whale {Balaenoptera physalus} spouting in front of iceberg, near Uummannaq, Greenland

Hiroya Minakuchi / Fin Whale (Balaenoptera physalus) near surface, Baja California, Mexico

Flip Nicklin / sFin Whale (Balaenoptera physalus) surfacing, Baja California, Mexico

Franco Banfi / Fin whale (Balaenoptera physalus) Pelagos Sanctuary for Mediterranean Marine Mammals, Mediterranean Sea. May

Franco Banfi / Fin whale (Balaenoptera physalus) Pelagos Sanctuary for Mediterranean Marine Mammals, Mediterranean Sea. September

Franco Banfi / Snorkeler and fin whale (Balaenoptera physalus) Pelagos Sanctuary for Mediterranean Marine Mammals, Mediterranean Sea. September

Franco Banfi / Fin whale (Balaenoptera physalus) Pelagos Sanctuary for Mediterranean Marine Mammals, Mediterranean Sea. September

Franco Banfi / Fin whale (Balaenoptera physalus) Pelagos Sanctuary for Mediterranean Marine Mammals, Mediterranean Sea. September

Doug Perrine / Fin whales (Balaenoptera physalus) spouting or blowing, off Grand Manan Island, Bay of Fundy, New Brunswick, Canada, North Atlantic Ocean. August.

Doug Perrine / Fin whale (Balaenoptera physalus) with patches of diatoms growing on skin, Letete Passage, Bay of Fundy, Canada, North Atlantic Ocean. August.

Doug Perrine / Fin whale (Balaenoptera physalus) with whale watching boat behind, Bay of Fundy, Canada, North Atlantic Ocean. August.

Doug Perrine / Fin or Finback whale (Balaenoptera physalus) with patches of diatoms growing on skin, Letete Passage, Bay of Fundy, Canada, North Atlantic Ocean. August.

Doug Perrine / Fin whale (Balaenoptera physalus) breathing at surface with blow holes open to inhale, showing asymmetrical colour pattern: lower jaw is white on right side, Ligurian Sea, Mediterranean Sea, Italy.

Doug Perrine / Fin whale (Balaenoptera physalus) at sunset, with Maritime Alps in background, Ligurian Sea, Mediterranean, Italy

Mark Carwardine / Fin whale (Balaenoptera physalus), two feeding, mouths open, aerial view. Baja California, Mexico. March.

Mark Carwardine / Blue whale (Balaenoptera musculus) and Fin whale (Balaenoptera physalus) travelling together, aerial view. Baja California, Mexico. March.

Mark Carwardine / Blue whale (Balaenoptera musculus) and Fin whale (Balaenoptera physalus) travelling together, tourists in whale watching boat, aerial view. Baja California, Mexico. March 2019.

Mark Carwardine / Fin whale (Balaenoptera physalus), two feeding, aerial view. Baja California, Mexico. March.

Mark Carwardine / Fin whale (Balaenoptera physalus), aerial view. Baja California, Mexico. March.

Mark Carwardine / Fin whale (Balaenoptera physalus), aerial view. Baja California, Mexico. March.

Mark Carwardine / Fin whale (Balaenoptera physalus), aerial view. Baja California, Mexico. March.

Mark Carwardine / Fin whale (Balaenoptera physalus), two swimming at surface, aerial view. Baja California, Mexico. March.

Mark Carwardine / Fin whale (Balaenoptera physalus), aerial view. Baja California, Mexico. March.

Mark Carwardine / Fin whale (Balaenoptera physalus), aerial view. Baja California, Mexico. March.

Mark Carwardine / Fin whale (Balaenoptera physalus), two at surface, aerial view. Baja California, Mexico. March.

Sylvain Cordier / RF-Fin whale (Balaenoptera Physalus) surfacing in coastal waters, mountains in background. Loreto Bay National Marine Park, Baja California Sur, Mexico. (This image may be licensed either as rights ma...

Espen Bergersen / Aerial view of Fin whale (Balaenoptera physalus) and boat. Norway, November.

Espen Bergersen / Aerial view of Fin whale (Balaenoptera physalus) Norway. November

Espen Bergersen / Aerial view of Fin whale (Balaenoptera physalus) Norway. November.

Espen Bergersen / Aerial view of Fin whale (Balaenoptera physalus) Troms, Norway. November

Espen Bergersen / Fin whale (Balaenoptera physalus). In background is the small town Skjervoy, Troms, Northern Norway.

Espen Bergersen / Aerial side view of Fin whale (Balaenoptera physalus) blowing. Kvanangen, Troms, Norway. November

Espen Bergersen / Fin whale (Balaenoptera physalus). In background is the small town Skjervay, Troms, Northern Norway. November