OCEAN SIMULATOR

The deep sea,
in your hands.

See how the ocean works by moving it yourselfThe layers set by temperature and salt, a planet-wide current driven by heat and salt, the Ekman spiral twisted by wind and Earth's spin, sea ice that freezes and rejects brine, tides raised by the Moon and Sun, waves that steepen and break in the shallows, tsunamis that cross the deep ocean at jet speed, the SOFAR channel that carries sound across ocean basins, food webs that pass on only about 10% at each level, spring plankton blooms, corals that bleach in hot water, and hydrothermal vents in the sunless deep. 12 modes that let you explore earth science, biology and introductory oceanography with your fingers.

Download on theApp Store Get it onGoogle Play

Free12 modes73 languagesNo accountiPhone · iPad · Android

12modes

3categories

$0no in-app purchases

73languages

Modes

12 modes

Three categories: seawater and currents, waves and tides, and life in the sea. Move a slider or tap a button and watch the currents, waves, populations and graphs respond instantly.

Seawater and currents4

Ocean layers

Temperature, salinity, and density with depth

Global conveyor belt

Heat and salt drive a planet-wide current

Ekman spiral

Wind and Earth's spin twist the current

Sea ice

Freezing, melting, and brine rejection

Waves and tides4

Tides

The Moon and Sun pull on the sea

Wave refraction and breaking

Waves slow and steepen in shallow water

TsunamiNEW

Crossing the deep ocean at jet speed

Sound in the seaNEW

The SOFAR channel, a highway for sound

Life in the sea4

Marine food web

Only about 10% passes up each level

Plankton bloom

Light, nutrients, and the seasons

Coral bleaching

Stress from heat and acidification

Hydrothermal vents

Deep-sea oases without sunlight

Screenshots

Move, observe, understand

Change the depth, wind, water temperature or the Moon's position, and tsunami speed, sound paths, current directions, tide levels and coral stress respond in real time.

**Faster in deeper water**Over 4,000 m of water a tsunami moves at about 700 km/h. Near shore it slows down and grows taller.

**The SOFAR channel**Sound is trapped at the depth where it travels slowest, and can be heard thousands of kilometers away.

**The global conveyor belt**Cold, dense water sinks near the poles and takes about a thousand years to come back around.

**Wind and spin twist the current**With depth the current turns and weakens, and the net transport ends up at right angles to the wind.

**Tides from the Moon and Sun**Earth turns beneath two tidal bulges, giving two high tides a day, plus spring and neap tides.

**When corals turn white**Prolonged heat drives out the algae that live inside corals. Track the stress with Degree Heating Weeks and pH.

Features

Built for learning

Hands-on

Change the depth, temperature, salinity, wind, the Moon's position or the nutrient supply with sliders and buttons, and watch the currents, waves and graphs respond.

The ocean made visible

Sinking cold water, currents twisting into a spiral, tidal bulges, waves breaking in the shallows, the paths of sound through the deep, energy climbing the food chain — the hidden motions of the sea, drawn and animated on screen.

Explanations included

Every screen explains the science behind it — seawater density, Ekman transport, the tide-generating force, shallow-water wave speed √(gh), the sound-speed minimum, the 10% rule, Degree Heating Weeks and more, with real examples and numbers.

73 languages

English, Japanese, Chinese, Korean, Spanish, Arabic and 67 more. The app follows your device language automatically.

Free, no account

Every feature is free. No in-app purchases, subscriptions or sign-in. The only ad is a Pangle banner at the bottom.

Easy to use anywhere

Dark and light themes, landscape, and iPad and tablets. Everything except ads works offline.

Pricing & ads

The app is free. There are no in-app purchases, subscriptions or paid unlocks, and no account is needed.

A Pangle banner ad is shown at the bottom of the screen. On iOS, the App Tracking Transparency (ATT) prompt appears at launch, and ads are personalized only if you allow tracking. On Android, the app asks once whether ads may be personalized. Either choice can be changed later from "About this app" > "Ad settings".

The app is an educational simulator for learning how the ocean works. It does not show real tide levels, sea conditions or tsunami warnings.

Requirements: iPhone and iPad with iOS 15.0 or later; Android 7.0 (API 24) or later phones and tablets.

Download

An ocean lab in your pocket.

Free on the App Store and Google Play.