UmimoriOUR BLUE CLASSROOM

HELLO, OCEAN.

A little curiosity.
A whole ocean
to discover.

Understand the sea, ask questions, and prepare for your next visit to the coast. A place for children and adults to learn together.

Explore the ocean
At home. In class. Together.
Every questionopens a
new world.
OUR BLUE CLASSROOMLet the sea teach you.

What would you like to discover?

Ocean science

Waves, tides and everyday wonders

Coastal safety

Knowledge to help you prepare

Life & environment

Connections across the ocean

Your day by the sea

Go swimmingChoose your beach, learn about wind and currents, and check the day’s local instructions.Explore tide poolsDiscover life on a rocky shore while looking after habitats and your route back.

One question leads to another.

As the tide falls, seawater remains in a hollow in the rocks.Lower tideWater remains
Life and environment

A small world in a tide pool

Explore the lesson
Arrows show wind blowing from land towards the sea.SeaLandInflatable
Coastal safety

Wind, waves and drifting offshore

Explore the lesson
Water carried towards shore collects and flows offshore in a rip current.OffshoreShore / beachRip current flowing offshoreOne example, viewed from above
Coastal safety

What is a rip current?

Explore the lesson
Wave crests and troughs, with wave height and wavelength marked.WavelengthWave heightSimplified wave, viewed from the side
Ocean science

Where do waves come from?

Explore the lesson
Water level and the shape of the coast.Sea levelExample high-tide levelAn imaginary coast, viewed from the side
Ocean science

Why do tides rise and fall?

Explore the lesson
An example marine food chain beginning with phytoplankton.Phyto-planktonZoo-planktonSmall fishLarge fishConnections beginning with tiny lifeArrows point from food to eater.
Life and environment

Tiny life, ocean-wide connections

Explore the lesson
One route for litter from a town, through a river, to the sea.Our townsRiverSeaOne route by which litter reaches the sea
Life and environment

From our streets to the sea

Explore the lesson

VISITING JAPAN

New to Japan’s coast?

Local planning tips, useful phrases and where to get help.

Visitor guide →Emergency contacts →

CURIOUS MINDS, CAREFUL EXPLANATIONS

Learn with a picture. Understand with a source.

Our diagrams simplify ideas and explain their limits. Safety content is still awaiting specialist review.
The hero image is AI-generated, not a photograph documenting a real beach.

How we make these lessons →