More than sharks

The giant shark tank has more than sharks.
It has divers who have to go into it and clean it by hand.
I love this picture (fuzzy and impressionistic as it is),
that shows one such diver and a curious child.

Also, the tank contains lots of fishes and creatures,
like this moray eel:

And this rather funky-looking swimming turtle:

At the bottom of the tank (visible from a winding ramp
that twines around the entire tank)
I watched the Great Turtle nose about in the sand for food.
What do sea turtles eat, anyway?
This one must find some pretty tasty things
because it is an absolutely enormous reptile.