Scuba Diving Safety Guide for Tokyo

Everything you need to stay safe while scuba diving in Tokyo. Local emergency contacts, Japan-specific tips, risk awareness, and free check-in tools to make sure someone always knows you're okay.

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Tokyo, Japan

JST (UTC+9) · Japanese

Safety Score92/100 — Generally Safe

Emergency Number

110

Language

Japanese

Local Tips for Tokyo

✓One of the safest major cities in the world — violent crime is extremely rare
✓Trains stop around midnight — plan your last train or budget for a taxi
✓Police boxes (koban) are everywhere and officers are helpful, though English is limited
✓Earthquakes are common — familiarize yourself with evacuation routes at your accommodation

Scuba Diving Risk Factors in Tokyo

⚠

Decompression sickness from ascending too quickly

⚠

Running out of air at depth

⚠

Equipment malfunction underwater

⚠

Dangerous marine life encounters including jellyfish and sea urchins

⚠

Disorientation and panic in low-visibility conditions

Safety Tips for Scuba Diving in Tokyo

Never dive alone — always use the buddy system

Check all equipment thoroughly before every dive

Plan your dive and dive your plan — respect depth and time limits

Ascend slowly and always perform a safety stop at 5 meters

Stay current with your certification and dive within your training level

Pre-Scuba Diving Checklist

✓All equipment checked and functioning
✓Dive plan agreed with buddy including depth and time limits
✓Shared dive site location with someone on shore
✓Checked weather and water conditions
✓Reviewed emergency ascent procedures with buddy
✓Surface interval logged if doing multiple dives

Quick Safety Tools

Dead Man Switch Timer

Set a countdown that alerts your contact if you don't check in.

Open Timer →

Emergency Message Generator

Generate a ready-to-send safety message with your details and location.

Generate Message →

Emergency Information for Tokyo

Emergency Number

110

Country

Japan

Language

Japanese

Save the emergency number in your phone before scuba diving in Tokyo. If you are a visitor, note that the primary language is Japanese. Emergency operators may speak limited English — learn key phrases like "help" and "emergency" in Japanese.

Set up a check-in before scuba diving in Tokyo

The ImAlive app lets you set automatic check-ins. If you don't respond, your emergency contact is notified immediately. Free, no hardware required.

Download ImAlive — Free

Frequently Asked Questions

Is Tokyo safe for scuba diving?

Tokyo has a safety score of 92/100. It is generally considered a safe destination for scuba diving, though standard precautions should always be taken. The emergency number in Tokyo is 110.

What are the main scuba diving risks in Tokyo?

The primary risks for scuba diving in Tokyo include decompression sickness from ascending too quickly, running out of air at depth, equipment malfunction underwater. One of the safest major cities in the world — violent crime is extremely rare Always set up a safety check-in before heading out.

What's the emergency number in Tokyo?

The emergency number in Tokyo, Japan is 110. Save this number in your phone before scuba diving. If you're a tourist, note that the local language is Japanese, but emergency operators often speak basic English.

How can I stay safe while scuba diving in Tokyo?

Key safety tips: Never dive alone — always use the buddy system. Check all equipment thoroughly before every dive. Plan your dive and dive your plan — respect depth and time limits. For Tokyo specifically: one of the safest major cities in the world — violent crime is extremely rare. Use the ImAlive app to set up automatic check-ins so someone always knows you're safe.