Rockpools exposed at low tide, Combesgate Beach, Devon, England, United Kingdom, Europe

Vibrant green algae exposed at low tide at Tregardock Beach, North Cornwall, England, United Kingdom, Europe

Black Rock Cottage, solitary and exposed on Rannoch Moor, Highlands, Scotland, United Kingdom, Europe

Mangrove tour, Langkawi Island, Malaysia, Southeast Asia, Asia

Exposed limestone at low tide at Nash Point on the Glamorgan Heritage Coast, Glamorgan, Wales, United Kingdom, Europe

Sea defences at low tide at Happisburgh, Norfolk, England, United Kingdom, Europe

Low tide exposing the Doom Bar on the Camel Estuary near Padstow, Cornwall, England, United Kingdom, Europe

She canÃt be more trusting than that. A curious Minke whale (Balaenoptera acutorostrata) has turned upside down exposing her white belly, navel and genital slits to the photographer. St. Lawrence estuary, Canada

She canít be more trusting than that. A curious Minke whale (Balaenoptera acutorostrata) has turned upside down exposing her white belly, navel and genital slits to the photographer. St. Lawrence estuary, Canada

She canÃŒt be more trusting than that. A curious Minke whale (Balaenoptera acutorostrata) has turned upside down exposing her white belly, navel and genital slits to the photographer. St. Lawrence estuary, Canada

Tourist, in Workshop of Fallow painter, Goree island, near Dakar, Senegal

Reportage in a smile bar in Paris, France. Teeth whitening involves applying a whitening paste using a special mouthpiece, then exposing the teeth to a LED lamp which sets off the whitening process.

Reportage in a smile bar in Paris, France. Teeth whitening involves applying a whitening paste using a special mouthpiece, then exposing the teeth to a LED lamp which sets off the whitening process.

Reportage in a smile bar in Paris, France. Teeth whitening involves applying a whitening paste using a special mouthpiece, then exposing the teeth to a LED lamp which sets off the whitening process.

A dry fracture of a Vero cell exposing the contents of a vacuole where Coxiella burnetii are busy growing.

Reportage in a smile bar in Paris, France. Teeth whitening involves applying a whitening paste using a special mouthpiece, then exposing the teeth to a LED lamp which sets off the whitening process.

Woman holding a orange colored fabric in the tropical breeze on the island of Barbados, Caribbean

A wet bald eagle (Haliaeetus leucocephalus) sits perched on a nest in grass atop an island at low tide, exposing rock and orange, yellow seaweed on a cloudy day in Prince William Sound, Alaska, United States of America