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Cratena nudibranchs_August 2025 CanonRF100 1/200 f11 iso100
By Antonio Venturelli
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Verconia nivalis nudibranch_March 2025 CanonRF100 1/200 f18 iso100
By Antonio Venturelli
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Every winter a group of female bullsharks come to this area to give birth season goes from November untill mid march.
By Ramon Magana
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Eyes of the Ocean Seeds of Life A blenny resting in a mussel shell while tiny eggs gently decorate its surface.
By Gozde Karayel
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Serpula vermicularis_August 2025 Canon RF100 1/200 f8 iso100
By Antonio Venturelli
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Lamprohaminoea ovalis_August 2025 CanonRF100 1/200 f16 iso100
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Underwater Photo Location: Bolder city

Underwater Photo Location: Bolder city

How Hot is this Dive Site? click a star to rate it
One of the best dive sites i've visited. The Similans have a wide diversity of life, coral, fish and visibilty perfect for anyone.
Facts about Bolder city
  • It is in Thailand
  • Bolder city is in the Indian Ocean.
  • The typical depth is 0-40 Metres 0-130 Feet.
  • The typical visibility is 30+ Metres 100+ Feet.
Dive types
Liveaboard

Marine Life
bigsmallsharksdolphinsturtlescoral



by Mark Lowiss
Bubble o-ring

by Patrick Neumann
Canon 400D + 60mm Macro lens

by Patrick Neumann
Light & Shadow.. Taken with Canon 400D + 60mm macro lens at Similan Islands

by Tobias Reitmayr
Amazing morning dive, "why become an astronaut", Boulder City, Similan Islands, Canon EOS 350d 10-22mm

by Tobias Reitmayr
Bignose unicornfish coming close. I love the out-of-focus pectoral fins. Amazing dive on Boulder City, Similan Islands. Canon EOS 350d, 10-22mm

by Kaye Smith
White Tip Lullaby. Baby white tip, resting under a rock at Boulder City, Similans.
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