ZANZIBAR. TANZANIA The Indian Ocean hits the coast of Zanzibar, Tumbatu and Mnemba, with some force. In Tanzania, these islands are a source of rich nature, which since the beginning of time, have attracted far-off civilizations. If there's anything that characterizes this sea, it would be the intense blue of its waters, purer than in other areas of the world. This mixture with the white sandy seabed makes the range or blues and greens so much more striking than in other parts of the world. Many types of coral can be found on the seabed: plate coral, brain coral and sea whips, all branched out representing the vast amount of this life form. It is also the reason why the sand, dominating these depths, is so fine and white.