Saleh Bay

Saleh Bay opens onto the northern coast of Sumbawa island, Indonesia. A vast semi-enclosed body of water, it harbors one of Southeast Asia's largest populations of oceanic manta rays. Nutrient-rich waters attract these giant rays in considerable numbers, making the bay a world-recognized diving and snorkeling site. The volcanic interior and traditional fishing villages round out a landscape still largely untouched by mass tourism.

What You'll See

Saleh Bay is foremost renowned for its oceanic manta rays (Mobula birostris), which frequent its waters year-round. Divers and snorkelers often observe them at the surface, feeding on plankton. The bay also welcomes dolphins, sea turtles, and a varied coral fauna. Along the shores, fishing villages still practice traditional artisanal fishing.

History and Context

Saleh Bay is bounded to the north by the Sanggar Peninsula, dominated by Mount Tambora. The 1815 eruption of Tambora—one of the most powerful in modern history—profoundly reshaped local geography and populations. The bay itself long served as a maritime axis for trade between the Sunda Islands. Its marine richness was only scientifically documented from the 2000s onward.

Highlights of Your Visit

Swimming with Manta Rays

The oceanic manta rays of Saleh Bay rank among the world's largest, with wingspans exceeding five meters. Surface snorkeling often allows close-range observations without diving equipment. Excursions depart from local boats based in coastal villages such as Labuhan Bajo (Sumbawa) or Calabai.

Scuba Diving

Diving sites in the bay offer coral drop-offs and cleaning zones where mantas allow themselves to be approached. Visibility varies by season and current conditions. A few local operators offer guided dives.

Mount Tambora

The Sanggar Peninsula, which closes the bay to the north, is dominated by Mount Tambora. A summit trek is possible for experienced hikers; the crater offers a direct view of the caldera formed in 1815. The combination of bay and volcano constitutes the region's major appeal.

Photography Tips

At the surface, morning light (before 10 a.m.) reduces glare and improves underwater visibility for snorkeling shots. A waterproof housing or underwater camera case is essential. Avoid using flash near the rays: it disrupts their behavior. Sunsets over the bay, with Tambora in the background, offer compelling compositions from the shore.

Location and Access

Saleh Bay lies on Sumbawa's northern coast. The main access is from Sumbawa Besar, the island's principal city, connected by air to Bali and Lombok. From Sumbawa Besar, the road leads to coastal villages along the bay (Calabai, Labuhan Kananga) after several hours of driving. Local maritime connections supplement overland access. Tourist infrastructure remains limited; plan for independent travel or an organized package.

Nearby Attractions

• Mount Tambora — The volcano that altered global climate in 1815; hiking to the caldera from the Sanggar Peninsula.
• Sumbawa Besar — The island's principal city, logistical departure point, featuring a wooden sultanate palace.
• Lombok — Neighboring island to the west, accessible by ferry or air, home to Mount Rinjani and Kuta's beaches.