Dive Site: Emerald Bay

About Emerald Bay

Emerald Bay in Lake Tahoe, contrary to tropical associations, offers a distinct cold-water diving experience. This aptly named bay features green water, giving the initial impression of a warmer climate, though the water temperature is significantly colder than tropical seas. Divers exploring this site will encounter unique subsurface features, primarily sunken cabins and trees. These submerged structures create a visual narrative of a long-lost logger's settlement that has been reclaimed by the lake. The topography primarily consists of these sunken terrestrial elements, forming an intriguing landscape. The visible structures of cabins and trees provide an unusual environment for exploration, differing greatly from typical coral reefs or rock formations. The site offers a glimpse into historical human activity merged with the natural underwater environment. Marine life at Emerald Bay is adapted to cold freshwater conditions. The focus here is not on coral or tropical fish but rather the unique ambiance created by the submerged forest and structures. The primary draw is the historical and geological aspect of the dive, rather than abundant marine species. This site is ideal for divers seeking a different kind of underwater adventure, focusing on unique geological and historical formations rather than vibrant ecosystems. The dive involves navigating around the cabins and trees, requiring comfort in cold water and an appreciation for distinct underwater scenery.

Dive site facts: Emerald Bay

Depth

10–25 m

Typical dive

10–15 m, 60+ min

Current

Mild

Visibility

10–30 m

Water temperature

27–30 °C

Entry

Shore

Level

Beginner to Advanced

Dive type

Reef, artificial reef, macro

Night dive

Possible

Region / port

Tulamben, Bali

Coordinates

-8.2702, 115.5898

Conditions & Currents

Emerald Bay is situated in a sheltered bay, typically experiencing minimal to no current, which makes it exceptionally calm for divers. The water surface is generally tranquil, providing an aquarium-like experience. Entry from the beach involves navigating black stones, and it is advised to put on fins once in thigh-deep water, especially during smaller surf. Visibility commonly ranges from 10 to 30 meters, occasionally dropping after heavy rainfall. Early morning dives often offer the calmest conditions and best visibility. The absence of strong currents allows for relaxed dives, suitable for all experience levels, and extends bottom time considerably.

Marine life & sighting chances

Nudibranchs

common

Frogfish

occasional

Ghost pipefish

occasional

Pygmy seahorses

Seasonal · occasional

Ribbon eels

common

Moray eels

common

Clownfish

common

Shrimps

common

Cuttlefish

occasional

Octopus

occasional

Leaf scorpionfish

occasional

Blacktip reef sharks

occasional

Dive profile & how the dive runs

Entry is from the black sand beach, best done by waiting for smaller surf sets and donning fins once in thigh-deep water. The dive typically begins with a gradual descent over the shallow reef, which extends to an average depth of 10 meters. Divers can explore the artificial structures and anemone gardens in this area, maximizing bottom time due to the shallow profile. The site gently slopes down to a maximum depth of approximately 25 meters, allowing for varied depth progression. A common route involves a pass over the shallow reef, sometimes followed by a quick swim towards the nearby USAT Liberty wreck, or exploring deeper parts of the bay. The turnaround point is flexible, often guided by air consumption or bottom time limits. Safety stops are usually conducted in the calm, shallow waters closer to shore, around 5 meters, where divers can continue to observe abundant macro life.

Underwater photography

Emerald Bay is a macro photography paradise, especially on the long-standing artificial structures and amidst the dense soft corals. Patience and good buoyancy are essential to approach shy subjects without disturbing them or damaging the reef. For macro subjects like nudibranchs, frogfish, ghost pipefish, shrimps, and pygmy seahorses, a macro lens (e.g., 60mm or 100/105mm) is highly recommended. External strobes are crucial to bring out the vibrant colors against the black sand and penetrate shadows. Snoots can be effective for isolating small critters. For wide-angle shots, the artificial structures like the airplane and statues, along with the black volcanic sand backdrop, offer unique compositions. Early morning light often provides the best conditions for both ambient light and strobe photography, enhancing visibility and reducing backscatter. Focus on slow, methodical searching to spot cryptic species.

Combine with nearby dive sites

• USAT Liberty Wreck

  A historic wreck dive accessible for all levels, teeming with marine life.

• Tulamben Wall

  Also known as The Drop Off, a steep volcanic wall rich in corals and larger fish.

• Boga Wreck

  An artificial reef with unique features like a VW car and Buddha statues, for more advanced divers.

• Batu Kelebit

  A boat-accessible site near Tulamben Wall known for its rich marine life in deeper waters.

Getting there & logistics

Emerald Bay is part of the Tulamben dive region, accessible from Bali's Ngurah Rai International Airport (DPS) in Denpasar, followed by a two to three-hour car transfer to Tulamben. Day trips typically involve two shore dives and sometimes an optional third, often combining Emerald Bay with nearby sites like the USAT Liberty wreck. Most dive operators in Tulamben offer porter assistance for carrying gear from the shore entry point. Dive packages usually include transfers, guide services, full equipment, tanks (air or Nitrox), lunch, and marine park fees. Trips from Sanur can also be arranged, taking around two to three hours for transport. The site's easy shore access makes logistics straightforward for both individual divers and groups.

Safety & environment

While Emerald Bay offers calm conditions, divers should always carry appropriate insurance that covers scuba diving and potential medical emergencies. The nearest recompression chamber is located in Denpasar, necessitating a significant evacuation time in case of a serious incident. Divers should ensure their equipment is well-maintained and exercise good buoyancy control to avoid contact with the fragile reef and artificial structures. Adhere to dive plan briefings, particularly regarding entry and exit procedures on the black sand beach, and always dive within your certification limits. Monitor air consumption carefully to ensure sufficient reserves for the duration of the dive and a proper safety stop. It is advisable to dive with a reputable local guide who is familiar with the site.

Who it suits — and who it doesn't

FAQ

Emerald Bay FAQ

Liveaboards diving Emerald Bay

These liveaboards may visit Emerald Bay on selected itineraries — the exact dive sites depend on departure, weather and conditions.

Naga Biru

Indonesia

12 guests40 m

$274/day

Ilike

Indonesia

16 guests40 m

$298/day

Mermaid I

Alor

15 guests28 m

$372/day

Sunshine Liveaboard

Indonesia

10 guests31 m

$192/day

Tiare Cruise

Indonesia

12 guests36.5 m

$473/day