View down the river with mountains in the background - South Africa

Riverside town backed by high ridges - South Africa

Aerial view of the Victoria & Alfred Waterfront with Table Mountain and Devil's Peak in the background - Cape Town, South Africa

Aerial view of Table Bay working harbour lying in the deep blue waters of the Atlantic Ocean - Cape Town, South Africa

A man trying to remove oil spill from the surface of the water, USA

The thick sludge of oil covering the sea after an oil spill, Mississippi Delta, USA

Oil can be seen on beaches, rocks and the bamboo throughout the south west passage of the Mississippi Delta

A boat cruising along the banks of the Okavango river

Volunteers sail to Grassholm on a rescue mission to save plastic entangled birds

A boat sails past a colony of Northern gannets - slow shutter speed

Tourists watching and photographing a whale

Woman with bright purple and green sari walking over a beautiful scenic canal bridge