There are several kinds of aquatic turtles, red eared and yellow eared sliders are 2 of the most common. You will need a BIG tank (mine is 50 gallons), because if your new pet thrives it will grow to be rather large. I bought one 3 years ago for my daughter. He was around the size of a bar of soap. Today, Mike is about half the size of the PC keyboard and still growing. You will need to fill his tank about 2/3rds full of water and provide it with a platform to sun himself on (they love sun and need the light for a healthy shell). They sell these at the pet shop. You will also need a submersable filter, a UV lamp and a heater for the water, plus some special cream for his shell. Don't buy a cheap glass heater, get one that is unbreakable...all metal. They are smart critters and have good eye sight. Mike can see me from across the living room and will beat his foot against the surface of the water to let me know that he is hungry...which is often. We started him out on turtle pellets, he got bored, so then he got pellets and dried shrimp, he got bored, pellets, dried shrimp and red turtle treats, he got bored. Fresh catfish, he got bored. Now he gets (I kid you not) 3 cocktail shrimp once a day. Loves it and the tank stays fairly clean. With the pellet food I was cleaning his tank once a week, with the shrimp, it's once every 3 weeks. They are remarkable animals and he has become a real part of our family. Good luck and enjoy your new pet. They're pretty cool!