Set streetside at Pier 39, this little, overpriced aquarium is a quick tour that you can turn to if you want to indulge the kids. With over 20,000 sea creatures swimming about, you’ll see the usual eels, octopuses, and jellyfish; you can pat bat rays and leopard sharks at the touch pool, or check out the new otter exhibit. The highlight for most kids is the conveyor-belt floor that moves you along a clear tube through a 700,000-gallon tank while sharks, rays, and all sorts of fish swim frantically beside you and over your head. If you buy your tickets online, you’ll save a few bucks.