WhaleNet is a program out of Wheelock College in Massachusetts that focuses on research of marine mammals.
They have archived and active satellite tag tracking data from whales, seals, and other marine mammals in the North Atlantic Ocean. They also have resources pages dedicated for students, for teachers, and for the public.
As well as an Ask a Scientist section where you can submit a question or see questions & answers from the past.
Let your kids dive into the Atlantic Ocean on the back of a whale: