You see a fin poke out of the water. It's a big gray animal with a
friendly face. It looks like a dolphin, but is it a porpoise? Dolphins
and porpoises are similar, but they have some important differences.
Find out how their fins, mouths, teeth, and behaviors can all help you
tell these two animal look-alikes apart. Filled with stunning photos and
playful text, early learners will be delighted as each page turns.