GREEN STUFF: The Orinoco River leads nutrient freshwater from the rain forest of Venezuela, straight to the reefs of Trinidad & Tobago islands. In the rainy season, this transforms the seawater into a shiny green soup. The vis is lowered, but the reefs are thriving with gigantic purple sponges and an amazing fish life – and makes diving in Tobago in the wet season very different from the normal tropical Caribbean blue.

 Images shot while diving with Frontier Divers Tobago - www.frontierdiverstt.com and  Tobago Dive Experience - www.mantalodge.com