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.
Credit: Georgette Douwma Stone Getty Images. The 327 living turtle species exhibit remarkable diversity, and they have colonized most available habitats. Some species live in deserts, while others live in rainforests, temperate forests, grasslands, lakes, ponds, rivers, swamps and coral reefs. Some turtles, particularly the wide-ranging sea turtles, have huge ranges that span thousands of miles.