"Relaxed, flexible diving holiday in North Sulawesi, Indonesia. 5* PADI Dive Resort Thalassa and her team dives in the Bunaken National Park, Lembeh Strait and Bangka Archipelago. Amazing coral reefs, abundant critters and fish life. The highest diversity in the world ..." 

Choose your language:

North Sulawesi: A Rich and Diverse Area

North Sulawesi is almost exclusively visited by divers. Why this is, will quickly become clear. It has one of the richest and most varied underwater landscapes on earth.

Specialists say that in Bunaken National Park alone, one can find more than 58 different coral species and subspecies and about 2,000 species of fish. These numbers grow even larger if you start counting the other species in the Archipelago of Bangka and Lembeh Strait.

Thalassa organizes trips to most of these extraordinary dive sites in this rich area. North Sulawesi is part of the island where three large bodies of water come together: the Pacific Ocean, Sulawesi (Celebes) Sea and the Indian Ocean. Together they are an important food source for numerous species. The tidal flow and variety of underwater landscapes also contribute to the richness of this treasure under the sea. The sea around North Sulawesi can be roughly divided into five different dive areas. Together they offer over 150 different dive sites, suitable for all levels. 

Water Temperature

The tidal range is about 2.2 m and therefore most of the dives are drift dives. The water temperature is between 26 and 29 degrees. Most of the divers and snorkellers wear a 3mm shorty or long-sleeve wetsuit.

New Thalassa shirts & bottles

Have a look at our new Thalassa shirts and bottles here. 

Guinness World Record

Thalassa team guest friends planting corals in front of Manado. Read more & see pictures here

IDC 2017


EFR Instructor 15 & 16 May 2017, IDC 18 May until 3 June 2017, Master Scuba Diving Prep Course 5-8 June 2017, I.E. 11-12 June 2017


EFR 13 & 14 October 2017, IDC 16 until 30 October 2017 (2 days off), Master Scuba Diving Prep Course 1-4 Nov 2017, I.E. 7-8 Nov 2017

Fund Raising Swim

On the 5th of June 2016 at least 40 students and alumni students from the Dive Tourism School in Tongkeina swam from the mainland to Bunaken Island to raise money for the Dive tourism school. Read more here.

Coral Day 2015

The Coral Day 2015 on Bangka Island has again recorded great success. See pictures here.