If you are drowning in a sea of loud, frantic preschool media, Octonauts is the life raft. It is smart, visually stunning, and actually teaches something about the natural world without feeling like a lecture.

This 2012 book holds up perfectly because it doesn't rely on pop culture references—it relies on great design and the universal kid appeal of 'cool vehicles saving animals.' It's a must-have for the home library if your kid has even a passing interest in the ocean.