Jeff Vanuga / Nakalele Point Blowhole with spray and a resulting rainbow. West Maui, Hawaii, September 2010.

Mark Carwardine / Blue whale (Balaenoptera musculus) surfacing and blowing, Endangered species, Sea of Cortez, Baja California, Mexico

Mark Carwardine / Blue whale (Balaenoptera musculus) surfacing, showing blowhole and vertebrae of spine, Endangered species, Sea of Cortez, Baja California, Mexico

DOC WHITE / Aerial view of bowhead whale {Balaena mysticetus} showing large crown (hump) around blowhole, Canadian Arctic

Doug Perrine / Atlantic spotted dolphin bubbles coming from blowhole whilst it whistles {Stenella (Non-ex).

TOM WALMSLEY / Killer whale (Orca) surfacing showing dorsal fin, eyepatch and blowhole {Orcinus orca} Iceland

TOM WALMSLEY / Blue whale blowing {Balaenoptera musculus} + surprised Fulmar. Iceland

Hiroya Minakuchi / Southern Right Whale (Eubalaena australis) blow holes, Valdes Peninsula, Argentina

Hiroya Minakuchi / Southern Right Whale (Eubalaena australis) surfacing and spouting, Valdes Peninsula, Argentina

Mark Carwardine / Fin whale (Balaenoptera physalus) close up of blowhole at surface, Sea of Cortez (Gulf of California), Baja California, Mexico, Endangered

Mark Carwardine / Grey whale (Eschrichtius robustus) spyhopping, San Ignacio Lagoon, Baja California, Mexico

Mark Carwardine / Grey whale (Eschrichtius robustus) surfacing, San Ignacio Lagoon, Baja California, Mexico

Mark Carwardine / Sei whale (Balaenoptera borealis) blowing, Sea of Cortez (Gulf of California), Baja California, Mexico, Endangered

Mark Carwardine / Grey whale (Eschrichtius robustus) close-up of blowhole, San Ignacio Lagoon, Baja California, Mexico

Mark Carwardine / Common dolphin (Delphinus sp) surfacing, showing blowhole, Baja California, Sea of Cortez (Gulf of California), Mexico

Mark Carwardine / Short-finned pilot whale (Globicephala macrorhynchus) surfacing and blowing, Baja California, Sea of Cortez (Gulf of California), Mexico

Mark Carwardine / Sei whale (Balaenoptera borealis) surfacing, blow-hole visible, Baja California, Sea of Cortez (Gulf of California), Mexico, Endangered species

Mark Carwardine / Blowhole of Humpback whale {Megaptera novaeangliae} New England, USA

Mark Carwardine / Risso's dolphin surfacing to breathe {Grampus griseus} The Maldives

Mark Carwardine / Blue whale surfacing, showing blow hole, Mexico {Balaenoptera musculus} Sea of Cortez, Mexico

Hiroya Minakuchi / Blue Whale (Balaenoptera musculus) surfacing, Santa Barbara, California

Hiroya Minakuchi / Humpback Whale (Megaptera novaeangliae) spouting, Antarctic Peninsula, Antarctica

John MacPherson / 2020VISION / Bottlenose dolphin (Tursiops truncatus) at surface in Kessock narrows, showing blowhole as it breathes, Inverness, Moray Firth, Scotland, UK, September 2011

Hiroya Minakuchi / Orca (Orcinus orca) exhaling while surfacing which creates bubbles, Prince William Sound, Alaska

Jeff Vanuga / Nakalele Point Blowhole with spray blasting through. West Maui, Hawaii, September 2010.

Doc White / Humpback whale (Megaptera novaeangliae) blowing at surface, Eastern Pacific

Mark Carwardine / Blue whale (Balaenoptera musculus) surfacing, showing blowhole and vertebrae of spine, Endangered species, Sea of Cortez, Baja California, Mexico

Mark Carwardine / Short-finned pilot whale (Globicephala macrorhynchus) at surface, Sea of Cortez, Baja California, Mexico

Mark Carwardine / Short-finned pilot whale (Globicephala macrorhynchus) at surface, showing blowhole, Sea of Cortez, Baja California, Mexico

Mark Carwardine / Humpback whale (Megaptera novaeangliae) surfacing, view along back to blowhole, Sea of Cortez, Baja California, Mexico

Mark Carwardine / Humpback whale (Megaptera novaeangliae) surfacing, view along back to blowhole, Sea of Cortez, Baja California, Mexico

Mark Carwardine / Humpback whale (Megaptera novaeangliae) swimming beside Bottlenose dolphin (Tursiops truncatus) Sea of Cortez, Baja California, Mexico

Mark Carwardine / Humpback whale (Megaptera novaeangliae) Lunging male fighting over a female, Sea of Cortez, Baja California, Mexico

Steven Kazlowski / Bowhead whale (Balaena mysticetus) exhaling through blowhole, swimming through open lead in the pack ice during spring migration, Chukchi Sea, off shore from Barrow, Alaska  

Steven David Miller / Humpback Whale (Megaptera novaeangliae) surfacing for air, exposing its blowhole. Hervey Bay, Queensland, Australia

Hiroya Minakuchi / Blue Whale (Balaenoptera musculus) spouting, Sea of Cortez, Mexico

Matthew Maran / The Blowhole at Fletchers Beach, Ucluth Peninsular, Vancouver Island, British Columbia, Canada

Matthew Maran / The Blowhole at Fletchers Beach, Ucluth Peninsular, Vancouver Island, British Columbia, Canada

Konrad Wothe / Gray Whale (Eschrichtius robustus) spouting, Mexico

Suzi Eszterhas / Blue Whale (Balaenoptera musculus) surfacing and spouting, Sea of Cortez, Mexico

Flip Nicklin / Blue Whale (Balaenoptera musculus) blowhole, Costa Rica

Matthew Maran / Humpback whale (Megaptera novaeangliae) blowing at dusk. Barkley Sound, Vancouver Island, Canada

Matthew Maran / Grey Whale (Eschrichtius robustus) blowing. Clayoquot Sound, Vancouver Island, Canada

Matthew Maran / Grey Whale (Eschrichtius robustus) blowing. Clayoquot Sound, Vancouver Island, Canada

Matthew Maran / Grey Whale (Eschrichtius robustus) blowing. Barkley Sound, Vancouver Island, Canada

Patrick Morris / Sea water erupting through blowhole, Espanola Is, Galapagos

Steven Kazlowski / Adventure travelers observing humpback whale blowing (Megaptera novaeangliae) in waters off the western Antarctic Peninsula, Southern Ocean

Steven Kazlowski / Humpback whale (Megaptera novaeangliae) surfacing and blowing in the waters off the western Antarctic Peninsula, Southern Ocean

Patrick Morris / Sea water erupting through a blowhole, Espanola Is, Galapagos

Carol Walker / Killer Whale (Orcinus orca), breaking the surface and expelling air through its blowhole. Paradise Bay, Antarctica.

Doug Perrine / False killer whale ( Pseudorca crassidens ) with mouth open, showing large conical teeth, and exhaling a bubble blast from blowhole, captive, aquarium, from Indo-pacific, digitally manipulated

Hiroya Minakuchi / Blue Whale (Balaenoptera musculus) spray from blowholes, endangered, Sea of Cortez, Mexico

Hiroya Minakuchi / Blue Whale (Balaenoptera musculus) spray from blowhole, endangered, Sea of Cortez, Mexico

Hiroya Minakuchi / Humpback Whale (Megaptera novaeangliae) spray from blowhole, Alaska

Flip Nicklin / Humpback Whale (Megaptera novaeangliae) spouting near ship, Humpback Whale National Marine Sanctuary, Maui, Hawaii - notice must accompany publication; photo obtained under NMFS permit 0753-1599

Flip Nicklin / Blue Whale (Balaenoptera musculus) blowhole, Sea of Cortez, Baja California, Mexico

Flip Nicklin / Orca (Orcinus orca) spouting, southeast Alaska

Flip Nicklin / Orca (Orcinus orca) spouting, southeast Alaska

Tui De Roy / Fin Whale (Balaenoptera physalus) resident adult at winter feeding grounds, Sea of Cortez, Baja California, Mexico

Flip Nicklin / Orca (Orcinus orca) surfacing, Alaska

Doug Perrine / Atlantic spotted dolphin releasing bubble stream from blowhole {Stenella frontalis}

Richard Du Toit / Blowhole off west coast of La Reunion, Indian Ocean

Todd Pusser / Blowhole of Short finned pilot whale {Globicephala macrorhynchus} Atlantic

Patricio Robles Gil / Blue Whale (Balaenoptera musculus) adult breathing at surface showing blowhole, southern Gulf of California, Mexico

Konrad Wothe / Gray Whale (Eschrichtius robustus) baby breathing at surface, pelagic northeastern Pacific Ocean

Norbert Wu / Pacific White-sided Dolphin (Lagenorhynchus obliquidens) surfacing to breath at Sea World, San Diego, California

Flip Nicklin / Orca (Orcinus orca) surfacing, Johnstone Strait, British Columbia, Canada

Flip Nicklin / Orca (Orcinus orca) surfacing, British Columbia, Canada

Tui De Roy / Blowhole, Punta Suarez, Hood Island, Galapagos Islands, Ecuador

Tui De Roy / Swallow-tailed Gull (Creagrus furcatus) on surf-beaten shore with blowhole, Punta Suarez, Hood Island, Galapagos Islands, Ecuador

Flip Nicklin / Sperm Whale (Physeter macrocephalus) spouting, Sri Lanka

Flip Nicklin / Sperm Whale (Physeter macrocephalus) blow hole and bubbles, Sri Lanka

Flip Nicklin / Gray Whale (Eschrichtius robustus) surfacing to breathe, Clayoquot Sound, Vancouver Island, British Columbia, Canada

Flip Nicklin / Southern Right Whale (Eubalaena australis) on surface

Flip Nicklin / Southern Right Whale (Eubalaena australis) spouting, Peninsula Valdez, Argentina

Flip Nicklin / Blue Whale (Balaenoptera musculus) blowhole, Sea of Cortez, Mexico

Flip Nicklin / Blue Whale (Balaenoptera musculus) spouting, Sea of Cortez, Mexico

Flip Nicklin / Bottlenose Whale (Hyperoodon ampullatus) surfacing, Nova Scotia, Canada

Flip Nicklin / Dwarf Minke Whale (Balaenoptera acutorostrata) surfacing, Lizard Island near the Great Barrier Reef, Australia

Flip Nicklin / Humpback Whale (Megaptera novaeangliae) blow hole, Southeast Alaska

TOM WALMSLEY / Grey whale blowing {Eschrichtius robustus} Baja California, Mexico

TOM WALMSLEY / Killer whale (Orca) surfacing showing mouth, eyepatch and blowhole {Orcinus orca} Iceland

TOM WALMSLEY / Blue whale at surface showing large blowhole {Balaenoptera musculus} Iceland

TOM WALMSLEY / Killer whale surfacing showing dorsal fin, eyepatch and blowhole {Orcinus orca} Iceland

Hiroya Minakuchi / Southern Right Whale (Eubalaena australis) blow holes, Valdes Peninsula, Argentina

Hiroya Minakuchi / Orca (Orcinus orca) exhaling while surfacing which creates bubbles, Prince William Sound, Alaska

Sebastian Kennerknecht / Blue Whale (Balaenoptera musculus) spouting, Monterey Bay, California

Hiroya Minakuchi / Blowhole, Espanola Island, Galapagos Islands, Ecuador

Flip Nicklin / Blue Whale (Balaenoptera musculus) spouting, Costa Rica

Hiroya Minakuchi / Humpback Whale (Megaptera novaeangliae) breathing, Alaska

Hiroya Minakuchi / Commerson's Dolphin (Cephalorhynchus commersonii) breathing, Falkland Islands

Hiroya Minakuchi / Atlantic Spotted Dolphin (Stenella frontalis) trailing bubbles, Little Bahama Bank, Bahamas, Caribbean

Flip Nicklin / Humpback Whale (Megaptera novaeangliae) spout from blowhole, Hawaii

Tui De Roy / Albatross (Diomedea sp) and blowhole along surf beaten shore, Galapagos Islands, Ecuador

Flip Nicklin / Blue Whale (Balaenoptera musculus) showing closed blowhole, Sea of Cortez, Mexico

Flip Nicklin / Blue Whale (Balaenoptera musculus) with open blowhole, Sea of Cortez, Mexico