Indonesia’s archipelago is a dream destination for travellers seeking extraordinary marine adventures and island-escape tours. With over 17,000 islands forming part of the region and ranking among the world’s largest oceanic territories, Indonesia is at the heart of the marine biodiversity hotspot known as the Coral Triangle — which hosts around 76 % of the world’s known coral species and over 2,000 reef fish species. For travel enthusiasts planning Southeast Asia island tours or Indonesia travel itineraries, this guide highlights ten of the most enchanting Indonesian islands — each with its own unique “things to do” list for your next voyage into paradise.
Why Indonesia is a Must-Visit for Island Travel
A Marine Biodiversity Mecca
Indonesia’s sea territory is enormous, and the region is globally recognized as an ecological treasure. As part of the Coral Triangle, the waters around Indonesia sustain some of the richest reef systems on Earth.
Unique Cultural and Maritime Heritage
Beyond the underwater marvels, Indonesia is also the birthplace of the traditional phinisi sailing vessels (recognised by UNESCO), showcasing the intersection of culture, heritage, and luxury travel on the ocean.
Diverse “Things to Do” for All Travel Styles
From hardcore diving and marine-wildlife encounters to yacht cruises and beach-side relaxation, Indonesia’s islands offer everything. Whether you’re looking into “Indonesia Tours”, “Island-hopping Things to Do”, or a tailored “Indonesia Travel” adventure, there is something here for every style of explorer.
Top 10 Indonesian Islands & What to Do
A carnival for diving enthusiasts!
(1) Raja Ampat – The Diver’s Paradise
This archipelago is often called the “Holy Grail” of diving.
With mind-blowing coral gardens, sightings of manta rays and whale sharks, and superb marine biodiversity, it’s a must on any Indonesia diving tour.
Multi-day liveaboard trips, island-hopping by phinisi or yacht, and underwater photography sessions rank among the most unforgettable things to do here.
(2) Bunaken – Coral Cliffs & Beginner-Friendly Snorkelling
Ideal for snorkellers and photographers alike, Bunaken’s underwater cliffs, colourful reefs and abundant sea turtles make it an excellent stop for those seeking “things to do” without needing advanced scuba certification.
(3) Wakatobi – Macro Diving & Marine-Life Galore
In Wakatobi — Indonesia’s largest marine reserve — you’ll find extraordinary diversity in micro-life (sea horses, nudibranchs) as well as spectacular reefs.
For diving aficionados and nature lovers seeking off-the-beaten-path “Indonesia Tours”, this is a standout.
Extreme sports fans, look here!
(4) Mentawai Islands – For the Surf & Adventure Crowd
If you’re into surf culture, kayaking, or big-game fishing, the Mentawai Islands deliver world-class waves and adventure. A top choice for active travellers looking for things to do beyond beaches.
(5) Bali – Culture, Surf & Luxury Yacht Cruising
A classic in Indonesia Travel, Bali is as much about culture and spirituality as it is about surfing and water-activities.
Whether you join a yacht tour, chase manta rays or relax in style, Bali offers a perfect blend of “Things to Do” and island ambience.
(6) Pulau Weh – Indonesia’s Westernmost Hidden Gem
A lesser-known island with great value: excellent diving/snorkelling, sailboat/yacht access, and one-of-a-kind underwater volcanic vents.
For travellers who want something off-the-tourist track in Indonesia Tours, Pulau Weh is it.
(7) Derawan Islands – Swim with Jellyfish & Island-Cruise Bliss
Derawan offers a truly dreamlike experience: yacht excursions, perfect sea-scapes, and an extraordinary jellyfish lake where you can swim among thousands of harmless jellyfish. “Things to Do” here push the surreal.
(8) Batam – Near Singapore, Easy & Indulgent
Just a short ride from Singapore, Batam is ideal for travellers seeking a quick island escape: shopping, spa, yacht rides, water-sports.
While not the diving hotspot of Indonesia, it has plenty of things to do for a relaxed snorkel or sea-scooter day.
(9) Nusa Tenggara – Sail Cruises & Volcano-Scape Beaches
In Nusa Tenggara you’ll find pink-sand beaches, dramatic volcanic islands, and the iconic Komodo National Park (yes – Komodo dragons!).
Ideal for travellers who want to combine sailing/yacht tours with dramatic scenery and a bit of wildlife.
Don’t miss this hidden gem!
(10) Morotai – Secret Underwater History Meets Nature
For the truly adventurous, Morotai delivers: WWII ship-wreck dive sites, coral reefs, and underwater adventures that mix history and nature.
Tailored tours focusing on diving wrecks and pristine coral make this a unique item on any Indonesia travel bucket-list.
Choosing the Right “Things to Do” for Your Style
- For divers: go for Raja Ampat, Wakatobi, Morotai.
- For surf/adrenaline: Mentawai, Bali.
- For relaxed island tours: Batam, Pulau Weh, Derawan.
- For sailing/yacht circuits: Nusa Tenggara, Bali.
Indonesia’s islands are far more than just picturesque destinations — they are vibrant worlds of marine wonder, cultural richness, thrilling adventure and luxurious escapes. Whether you’re charting an underwater course through coral kingdoms, cruising aboard a traditional phinisi, or simply soaking up sun on a pink-sand beach, there is an island waiting for your story.