One type of turtle is the Sea Turtle. This turtle stays in the water most of their lives, it take its head out to breath.
Sea Turtle by Bernard Spragg from goodfreephotos.com CC0/Public Domain
The Tortoise is a land animal and it can get very big
The Tortoise can get realy big and their whole life in land. Their shell is made of a lot of bones, about 60 different bones all connected to each other.
Tortoise by John5199 from wikimedia Creative Commons