Dolphins are super cool sea creatures that can swim fast, jump high, and make all kinds of nifty noises. But did you know that they also have big complicated brains like humans do? How did they get those big brains, and what do they use them for? We asked science writer Vicky Stein to help us find the answer.

Got a question that’s FIN-tastic? Send it to us at BrainsOn.org/contact, and we’ll set out with a great sense of porpoise to find the answer!