They're startled and startling, his eyes, like saltwater deep-sea pressure-resistant fish, at swim behind dense aquarium glass.

Then, as I gaped in growing terror, Mr. Mortman pulled a black snail off the side of the aquarium glass.

He swallowed the snail, then reached to pull another one off the aquarium glass.

Moreover, autofocus lenses have the annoying habit of frequently being confused by the aquarium glass, resulting in out of focus photographs.

This gives one the chance to focus and shoot, taking care to keep the camera pointed at a small angle to the aquarium glass.

Of course it goes without saying that the aquarium glass must always be perfectly clean for best results.

They can break out of aquarium glass with one strike of their claw.

Although it happens rarely, some larger species of mantis shrimp are capable of breaking through aquarium glass with a single strike from this weapon.

It works along the same lines as an algae magnet where the two magnets attract each other through the aquarium glass.

There are also specific instructions for tricks like capturing moonlight and filming fish behind aquarium glass.