Michael Durham / California Darner (Rhionaeschna californica) dragonfly, photographed with a high-speed camera, coastal mountains, Oregon

Michael Durham / Eight-spotted Skimmer (Libellula forensis) dragonfly male flying, photographed with a high-speed camera system in the coastal mountains of Oregon, near Florence

Michael Durham / Western Gull (Larus occidentalis) flock flying over the Oregon coast

Michael Durham / Rainbow Trout (Oncorhynchus mykiss) pair underwater in Utah, a popular game fish native to coastal streams of the western US and introduced into the eastern US and worldwide

Tim Fitzharris / Sunset at Shark's Cove, Oahu, Hawaii

Tim Fitzharris / Sunset over Leo Carillo State Beach, Malibu, California

Tim Fitzharris / Enderts Beach at sunset, Redwood National Park, California

Tim Fitzharris / Castle Rock overlooking Lake Superior, Pictured Rocks National Lakeshore, Michigan

Tim Fitzharris / Incoming waves at Bandon Beach, Oregon

Staffan Widstrand / Palm tree shadow on beach nd sea shore, Tobago, Caribbean.

Jose B. Ruiz / Dead Loggerhead turtle on shore (Caretta caretta) Spain

Staffan Widstrand / Portrait of Walrus {Odobenus rosmaris} asleep on shore, Chukotka, Russia.

LYNN M. STONE / Sea shells on the sea shore, Florida, USA.

Todd Pusser / Fish chased into shore by Bottlenose dolphins strand feeding at salt marsh, SE USA

Tim Fitzharris / Crashing surf on rocks at sunset, Point Piedras Blancas, California

Tim Fitzharris / California Poppy (Eschscholzia californica) cluster growing on coastal cliff, Jughandle State Reserve, Mendocino County, California

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) breeding male basking with Sally Lightfoot Crab (Grapsus grapsus) scavenging dead skin, Hood Island, Galapagos Islands, Ecuador

Jim Brandenburg / Ice along the shore of Burntside Lake at sunset, Superior National Forest, Minnesota

Gerry Ellis / Soda and algae formations near shore of Lake Natron, Great Rift Valley, Tanzania

Gerry Ellis / Aerial view of barchan dunes showing typical horns and downwind slip face, at approximately 32 degrees, Skeleton Coast National Park, Namibia

Michael & Patricia Fogden / Aerial view of sand dunes along the Skeleton Coast, Walvis Bay, Namibia

Tim Fitzharris / Hidden Beach and Memorial Point, Lake Tahoe, Nevada

Jim Brandenburg / Moose Lake shoreline covered in frost, Minnesota

Patricio Robles Gil / Sea Star on rocky beach, Baja California, Mexico

Patricio Robles Gil / Cardon (Pachycereus pringlei) cactus, Esp?ritu Santo Island, Gulf of California, Mexico

Patricio Robles Gil / Blue-footed Booby (Sula nebouxii) perched on rocks and cactus on San Pedro Martir Island, Gulf of California, Mexico

Bob Barbour / Breaking waves, Waimea shorebreak, North Shore, Oahu

Tim Fitzharris / Waterfall along Hana coast, Maui, Hawaii

Yva Momatiuk & John Eastcott / Atlantic Puffin (Fratercula arctica) pair in their bright breeding colors, during summer breeding season on coastal cliffs, Newfoundland, Canada

Yva Momatiuk & John Eastcott / Atlantic Puffin (Fratercula arctica) adults congregate in colony on coastal cliff during summer breeding season, Newfoundland, Canada

Yva Momatiuk & John Eastcott / Black-bellied Plover (Pluvialis squatarola) non-breeding bird resting on one leg on shore, spring, Gulf of Mexico, Padre Island National Seashore, Texas

Yva Momatiuk & John Eastcott / Pacific Walrus (Odobenus rosmarus divergens) bull portrait on coastal rocks in haul-out cove, summer, Round Island, Bering Sea, Bristol Bay, Alaska

Gerry Ellis / Sea Otter (Enhydra lutris) portrait in Kelp, Pacific coast, North America

Tim Fitzharris / Rocky coastline of Point Lobos State Reserve, California

Tim Fitzharris / McWay Cove and McWay Falls, Julia Pfieffer-Burns State Park, California

Gerry Ellis / Conch shell on Seven Mile Beach, Grand Turk Island, Turk and Caicos Islands, Caribbean

Tim Fitzharris / Coastal rocks, Bruce Peninsula National Park, Ontario, Canada

Tim Fitzharris / Ice Plant (Carpobrotus edulis), Big Sur coast near Bixby Creek, California

Norbert Wu / Ice floes that have broken off sea ice edge in late summer, coast guard icebreaker in background, McMurdo Sound, Antarctica

Konrad Wothe / Orca (Orcinus orca) female surfacing and spouting beside conifer-covered coastline, Inside Passage, Alaska

Tui De Roy / The rainless coast of the Atacama Desert is bordered by rich Humboldt Current upwelling, Paracas National Reserve, Peru

Jim Brandenburg / Red Pine (Pinus resinosa) at edge of lake in Boundary Waters Canoe Area Wilderness with 1200 miles of canoe routes, part of Superior National Park, Minnesota

Tim Fitzharris / Roseate Spoonbill (Platalea ajaja) flock wading in pond, Texas coast near Galveston

Michio Hoshino / Marine Iguana (Amblyrhynchus cristatus) group with Sally Lightfoot Crabs (Grapsus grapsus), Galapagos Islands, Ecuador

Tui De Roy / Sally Lightfoot Crab (Grapsus grapsus) pair sharing boulder with Marine Iguanas (Amblyrhynchus cristatus) to escape high tide, Mosquera Island, Galapagos Islands, Ecuador

Tui De Roy / Sally Lightfoot Crab (Grapsus grapsus) group sharing boulder with Marine Iguana (Amblyrhynchus cristatus) trio to escape high tide, Mosquera Island, Galapagos Islands, Ecuador

Tui De Roy / Emperor Penguin (Aptenodytes forsteri) large chick on fast ice, midnight sun in austral spring, No-name Rookery, Princess Martha Coast, Weddell Sea, Antarctica

Tui De Roy / Sally Lightfoot Crab (Grapsus grapsus) group sharing boulder with three Marine Iguana (Amblyrhynchus cristatus) group to escape high tide, Mosquera Island, Galapagos Islands, Ecuador

Tui De Roy / Marine Iguana (Amblyrhynchus cristatus) pair silhouetted on lava shore at sunset, Cape Douglas, Fernandina Island, Galapagos Islands, Ecuador

Tui De Roy / Green Sea Turtle (Chelonia mydas) female hauling out on beach, Bartolome Island, Galapagos Islands, Ecuador

Tui De Roy / Brown Pelican (Pelecanus occidentalis) plunge diving in coastal shallows, Academy Bay, Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Atacama Desert, weather beaten sea cliffs and Pacific Ocean, Paracas Peninsula, Peru

Norbert Wu / Coast guard icebreaker travels through ice floes which have broker off sea ice edge in late summer, McMurdo Sound, Antarctica

Tui De Roy / Atlantic Walrus (Odobenus rosmarus rosmarus) bachelor bulls on ice floe, North Coast Spitsbergen, Svalbard, Norwegian Arctic

Tui De Roy / Emperor Penguin (Aptenodytes forsteri) pair with chick, Atka Bay, Princess Martha Coast, Weddell Sea, Antarctica

Jim Brandenburg / Breeze blown grass of lakeside sedge meadow, Moose Lake, Boundary Water Canoe Area Wilderness, Minnesota

Tui De Roy / Fimbul Ice Shelf, Princess Martha Coast, East Antarctica

Tui De Roy / Campbell Albatross (Thalassarche impavida) coming in to land, Bull Rock, North Cape Colony, Campbell Island, New Zealand

Tui De Roy / Sally Lightfoot Crab (Grapsus grapsus) feeding along tide pool edge, Punta Espinosa, Fernandina Island, Galapagos Islands, Ecuador

Fred Bavendam / Horseshoe Crab (Limulus polyphemus) group crawling ashore on the high tides of spring to lay their eggs in Delaware Bay's sandy beaches, New Jersey

Juergen Freund / Split-level shot of coral reef and shore, Phillippines

Pete Oxford / Whitetip reef sharks {Triaenodon obesus} in shallows near shore, Bartolome Is, Galapagos

David Noton / Idyllic beach landscape with pam trees and gentle waves, Pigeon Point, Tobago, Caribbean

Jabruson / Beach landscape with storm clouds. Sal Island, Cape Verde Is, Atlantic Ocean

Fergus Gill / 2020VISION / Female Eider (Somateria mollissima) standing on shore, Outer Hebrides, Scotland, UK, June.

Kirkendall-Spring / Rock formations at Shore Acres State Park near Charleston, Oregon, USA, June 2012

Nick Upton / Herring gull (Larus argentatus) eating a Shore crab (Carcinus maenas) which it has caught in the Looe estuary at low tide, Cornwall, UK, June.

Nick Upton / Herring gulls (Larus argentatus) foraging in a flock in shallow sea water near shore for invertebrates disturbed from tide wrack by a high spring tide, Looe, Cornwall, UK, June.

Nick Upton / Herring gull (Larus argentatus) pecking at a Shore crab (Carcinus maenas) which it has caught in the Looe estuary at low tide, Cornwall, UK, June.

Nick Upton / Herring gulls (Larus argentatus) landing and standing and calling on a wave washed rock near the shore at high tide, as others forage for invertebrates in the water nearby, Looe, Cornwall, UK, June.

Nick Upton / Herring gulls (Larus argentatus) landing and standing on a wave washed rock near the shore at high tide, Looe, Cornwall, UK, June.

Nick Upton / Herring gull (Larus argentatus) landing among a flock foraging near shore for invertebrates disturbed from tide wrack by a high spring tide, Looe, Cornwall, UK, June.

Nick Upton / Herring gull (Larus argentatus) landing among a flock foraging near shore for invertebrates disturbed from tide wrack by a high spring tide, Looe, Cornwall, UK, June.

Nick Upton / Herring gulls (Larus argentatus) foraging in a flock in shallow sea water near shore for invertebrates disturbed from tide wrack by a high spring tide, with Downderry village in the background, Looe,...

Nick Upton / Eiders (Somateria mollissima) three males in eclipse plumage and a female roosting on sandstone shore at high tide, Fife, UK, July.

Nick Upton / Eiders (Somateria mollissima) three female duck roosting on sandstone shore at high tide, Fife, UK, July.

Peter Cairns / 2020VISION / Man fishing on the shore of the Moray Firth, Fortrose, Scotland, UK, July 2012.

Peter Cairns / 2020VISION / View along the shore of Loch Morlich, Cairngorms National Park, Scotland, UK, May.

Colin Monteath / Eleven-armed Sea Star (Coscinasterias calamaria) group on coastal rocks at low tide, Paparoa National Park, New Zealand

Colin Monteath / Eleven-armed Sea Star (Coscinasterias calamaria) group on coastal rocks at low tide, Paparoa National Park, New Zealand

Kevin Schafer / Brown Noddy (Anous stolidus) and Sally Lightfoot Crabs (Grapsus grapsus), Galapagos Islands, Ecuador

Kevin Schafer / Sally Lightfoot Crab (Grapsus grapsus) group in surf, Santiago Island, Galapagos Islands, Ecuador

Tim Fitzharris / Seastacks silhouetted at sunset, Ruby Beach, Olympic National Park, Washington

Tim Fitzharris / Seastacks silhouetted at sunset, Ruby Beach, Olympic National Park, Washington

Tim Fitzharris / Tropical island, Cadlao Island, Palawan, Philippines

Tim Fitzharris / Palm trees on beach, Palmetto Bay, Roatan Island, Honduras

Tim Fitzharris / Pelada Beach, Costa Rica

Tim Fitzharris / Coast, Roca Loca Point near Jaco, Costa Rica

Tim Fitzharris / Resort, Palmetto Bay, Roatan Island, Honduras

Tim Fitzharris / Long Beach, Pacific Rim National Park, Vancouver Island, British Columbia, Canada

Tim Fitzharris / Moon over Botany Bay, Vancouver Island, British Columbia, Canada

Tim Fitzharris / Lupine (Lupinus sp) flowers at coast with moon, Westport-Union Landing State Beach, California

Tim Fitzharris / Coastal cliffs, Jughandle State Reserve, California

Tim Fitzharris / Brown Pelican (Pelecanus occidentalis) on coastal rock, El Matador Beach, Malibu, California

Tim Fitzharris / California Poppy (Eschscholzia californica) flowers, Big Sur, California

Tim Fitzharris / Kirk Creek Beach, Big Sur, California