Nice job breaking it, hero

Okay, now I have to read some biology books.
In portuguese, the word for both is the same (tartaruga) and the difference between turtle and tortoise I thought it was just a matter of how the queen’s crumpets were on a particular morning when naming these critters.
Now, I know some are aquatic tortoises, but even for the somewhat uninformed me, that one seems more like a land tortoise (at the risk of a biologist throwing me a blue shell, seems that aquatic ones have a “froggy” look).