The only thing you need to do is to GENTLY brush your tongue daily, as bacteria can collect in the fissures, causing bad breath. I'm enclosing a link to the couple of lines wikipedia has about it, mainly so you can see the picture there.
Quick Answer. As of 2009, there are 270 species of turtles, and more are being discovered. Turtles have been on the Earth for 230 million years and predate dinosaurs. Turtles have developed multiple habitats and live anywhere except the Arctic and Antarctic. Continue Reading.
Species diversity and distribution. There are approximately 70 species of sea snakes living in our modern oceans. They account for 86% of marine reptile species alive today. Other marine reptiles include seven species of sea turtles, the salt water crocodile and the marine iguana.