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

✓Violent crime is extremely rare and Tokyo consistently ranks among the safest major cities in the world — the main risks for solo travelers are concentrated in nightlife districts like Kabukicho and Roppongi, where touts promising cheap drinks can steer you to bars with inflated bills or spiked drinks; ignore street touts entirely and choose venues yourself
✓Japan uses two emergency numbers: 110 for police and 119 for fire and ambulance — save both, and note the 24/7 Japan Visitor Hotline run by the national tourism organization (JNTO) offers English-language help when local operators' English is limited
✓Trains and the subway are safe at every hour they run, but most lines stop around midnight and restart near 5am — check your last train time or budget for a licensed taxi, and note several lines offer women-only cars during weekday rush hours
✓Koban (small neighborhood police boxes) are on street corners across the city and are the fastest way to get help, report a lost item, or ask directions — officers are used to assisting visitors even with limited English
✓Earthquakes are a fact of life in Tokyo — learn the evacuation route at your accommodation, keep shoes and a charged phone within reach at night, and download the Japan Tourism Agency's official 'Safety tips' disaster-alert app so warnings reach you in English
✓Carry your passport (foreign visitors are legally required to keep it on them) and don't panic over lost belongings — Japan's lost-and-found system is exceptional, and items handed in at a koban or station office are very often recovered

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. Violent crime is extremely rare and Tokyo consistently ranks among the safest major cities in the world — the main risks for solo travelers are concentrated in nightlife districts like Kabukicho and Roppongi, where touts promising cheap drinks can steer you to bars with inflated bills or spiked drinks; ignore street touts entirely and choose venues yourself 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: violent crime is extremely rare and tokyo consistently ranks among the safest major cities in the world — the main risks for solo travelers are concentrated in nightlife districts like kabukicho and roppongi, where touts promising cheap drinks can steer you to bars with inflated bills or spiked drinks; ignore street touts entirely and choose venues yourself. Use the ImAlive app to set up automatic check-ins so someone always knows you're safe.