Calm Aquarium 🐠

A little ocean of calm for your classroom

Soft light rays, drifting bubbles, swaying seaweed and a school of pastel fish — the aquarium theme makes quiet feel rewarding. While the class stays under the noise limit, the fish glide peacefully and even blow tiny heart bubbles. When it gets loud, they dart behind the seaweed and wait for calm to return. Perfect for silent reading, tests, and wind-down time.

Shush Meter is a free classroom noise monitor: no account, no install, fully private — sound is measured live in your browser and never recorded. Also try the bouncy balls and the sleeping cat themes.