MARLIN - Jeju Diving & Travel

MHNet Inc.

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About this app

【 Jeju Island Scuba Diving & Travel Information 】

Create unforgettable travel memories with scuba diving in Jeju, South Korea.

DIVEMAP is a Jeju-based dive center offering a global-friendly scuba diving program powered by an IT-based app service.

With the MARLIN app, you can easily make inquiries, reservations, and enjoy access to dive logbooks and a variety of community services.

In addition, the app provides real-time Jeju travel information—including accommodation, festivals, performances, events, experiential tourism, food, historical sites, leisure sports, nature tours, shopping, and cultural attractions—so you can fully enjoy everything Jeju has to offer.

▶ Features ◀

◈ From inquiry to preparation to diving in Jeju

Planning a scuba diving trip to Jeju from overseas can be challenging.

MARLIN is built around DIVEMAP Jeju, a local dive center operation, helping you move from your first inquiry to real diving—smoothly and confidently.

Before you arrive, you may wonder:
• Which dive sites will you visit?
• How will the schedule work?
• What should you prepare and bring?
• How is diving operated locally in Jeju?
• Can first-time visitors join without stress?

MARLIN helps reduce uncertainty and guides you into a real Jeju diving experience.

◈ DIVEMAP Jeju — One-Stop Diving Service

DIVEMAP is a real dive center based in Jeju, connected directly to the MARLIN app.
From booking to on-site diving, MARLIN supports a seamless one-stop journey.

• Jeju diving schedule guidance
• Inquiry & reservation support
• Practical, real-world local diving information
• A smoother experience from online planning to offline diving

This is not just a travel information app—
it’s a platform that turns Jeju diving plans into reality.

◈ Jeju Scuba Diving for Visiting Divers

Jeju is a unique volcanic island where ocean conditions and underwater scenery change with the seasons.
Every trip offers something different.

MARLIN is designed for visiting divers who want to enjoy Jeju with less trial-and-error and more confidence.

◈ Log your dives, keep your memories

Diving doesn’t end when you surface.
Keep your experiences organized with MARLIN’s dive logbook features.

• Manage and store your dive history
• Save your travel memories
• Build references for your next dive trip

◈ Real-time Jeju travel information

Discover Jeju beyond diving with updated travel information inside the app.

◈ A platform built for divers

MARLIN is not about having the most features.
It’s about helping divers truly enjoy scuba diving in Jeju—more easily, more clearly, and more completely.

Your global gateway to Jeju scuba diving & travel information.
Now, all you need is the MARLIN app.

Ratings and reviews

language seems to have defaulted to Korean since last update and I can't work out how to change it. can't use anymore

Easy to use and share diver's log to buddy or other divers.

App would not start on LG V30. All I get is a blue screen with 3 white blinking dots. Reinstalled multiple times with same result.

What’s new

Updates are made regularly to make the app better. Please use the latest version with bug fixes and improved app stability.

- Jeju Island travel details
- Content composition reorganization
- Bug fixes