Latest Big Blue News From The Similan Islands

Similans Secrets

Picture of Big Blue Diving Khao Lak
Big Blue Diving Khao Lak

This week we had a lot of fun.

Conditions were as good as they have been all season. 30m visibility almost everywhere, calm flat seas and generally no strong currents (obviously not including Koh Tachai, woohoo what a dive that was). However, one thing that struck me most this week was how many secrets there are left to be discovered here.

[az_single_image image=”2821″ image_mode=”img-full-responsive” image_style_effects=”default-image” image_box_shadow_effects=”no-shadow” image_alignment=”aligncenter” image_link=”no-link” target=”_self” animation_loading=”no” animation_loading_effects=”fade_in”]

Simian islands secrets

I have been in the Similans for four seasons. I thought I know everything about it. Apparently I was mistaken. The first new discovery was on island number 4. There are two big beaches there and I would be lying if I told you they didn’t get busy in peak season. Of course they do! It’s the world famous Similan Islands! But fortunately there are places to escape the crowds. We went for a little walk around the island looking for lizards, bats and Nicobar pigeons.

[az_single_image image=”2819″ image_mode=”img-full-responsive” image_style_effects=”default-image” image_box_shadow_effects=”no-shadow” image_alignment=”aligncenter” image_link=”no-link” target=”_self” animation_loading=”no” animation_loading_effects=”fade_in”]

I noticed a small sign I had never seen before. It was simply marked ‘sunset’. We had a bit of time so we went for a look. What we discovered is that you are able to explore the whole West side of the island and as you can see from the photos, you will likely be on your own when you do. We found several viewpoints with stunning views. The boats are all moored on the east side leaving the west unspoiled. The view of the seemingly endless Indian Ocean stretches far off into the distance. There is nothing between you and India. Just the Big Blue.

[az_single_image image=”2820″ image_mode=”img-full-responsive” image_style_effects=”default-image” image_box_shadow_effects=”no-shadow” image_alignment=”aligncenter” image_link=”no-link” target=”_self” animation_loading=”no” animation_loading_effects=”fade_in”]

Starting to run low on time we headed back towards princess bay. But there was one little detour on the way. Another small Signpost, this one marked ‘small beach’. This modest little beach doesn’t need a fancy name. It’s just there for you to enjoy, if you can find it. Of course there was nobody else here. I can’t explain how nice the feeling of solitude on a paradise island feels. You will just have to come and experience it for yourself. This was a wonderful start to the trip. But the surprises were not just on land.

Koh bon’s secrets

Diving with a small experienced group of divers is the best way to dive. For me as a guide, I look forward to these kind of trips. When you dive with people you trust, you relax more and you enjoy it more. By the time we got to koh bon, I knew we could go exploring to the furthest parts of the divesite and see things that others don’t.

[az_gallery_images images_gallery=”2828,2838,2830″ gallery_layout=”grid-gallery” carousel_gallery_item=”6″ carousel_gallery_item_tablet=”3″ carousel_gallery_item_mobile=”1″ carousel_gallery_navigation=”false” carousel_gallery_pagination=”false” carousel_gallery_autoplay=”false” gallery_columns_count=”3clm” gallery_wall=”yes”]

There is a part of Koh Bon that I only discovered recently. A few other boats dive there, but most people don’t know it’s there. In this place the hard corals are the healthiest I have seen in the similan islands. And the number of fish when we were diving there was staggering.

[az_gallery_images images_gallery=”2822,2855,2856″ gallery_layout=”grid-gallery” carousel_gallery_item=”6″ carousel_gallery_item_tablet=”3″ carousel_gallery_item_mobile=”1″ carousel_gallery_navigation=”false” carousel_gallery_pagination=”false” carousel_gallery_autoplay=”false” gallery_columns_count=”3clm” gallery_wall=”yes”]

Personally I believe One mistake new divers make is to just keep on moving. I’m of the opinion that if you find somewhere nice, then stay. We had so much fun swimming in and out of the huge schools of glass fish and fusiliers hugging this newly discovered little pinnacle. It was my favourite dive of the trip. And what was the icing on the cake? Nobody else was diving there.
It was a fantastic trip and thank you to everyone that came. I hope you enjoyed yourselves as much as we at big Blue did. Take at peek at some of the photos and please leave us a comment to tell us what you thought.

[az_gallery_images images_gallery=”2845,2844,2843,2842,2841,2840,2839,2838,2837,2836,2825,2823,2830,2827,2826,2828″ gallery_layout=”masonry-gallery” carousel_gallery_item=”6″ carousel_gallery_item_tablet=”3″ carousel_gallery_item_mobile=”1″ carousel_gallery_navigation=”false” carousel_gallery_pagination=”false” carousel_gallery_autoplay=”false” gallery_columns_count=”3clm” gallery_wall=”yes”]

Previous Posts

Living Blue
Eve Pilmore

2025 Recap: Big Blue Diving Khao Lak × Andaman Turtle Watch

As 2025 comes to a close, we reflect on an extraordinary year of collaboration between Big Blue and Andaman Turtle Watch. From leading the region in citizen science submissions to launching the Andaman Sea’s first public sea turtle photo-ID database, this partnership shows what’s possible when conservation is embedded into everyday diving. The data, the discoveries, and the turtles tell a powerful story – and this is only the beginning.

Read More »
Living Blue
Eve Pilmore

Big Blue Diving X Andaman Turtle Watch

Adventure meets conservation! Big Blue Diving Khao Lak played a leading role in Andaman Turtle Watch’s début season, driving sea turtle research, creating turtle-trips, and launching the first public ID database.

Read More »
Spawning corals in the Similan Islands
Similan Updates
Boots

Coral Spawning in the Similan Islands: A Natural Wonder

Coral spawning around the Similan Islands is one of nature’s most incredible spectacles. Each year, during the full moons of March and April, corals release eggs and sperm into the sea, ensuring the reefs’ regeneration and supporting the region’s rich marine biodiversity. This synchronized event is vital for the future health of the Similan reef ecosystem.

Read More »

The Big Blue Shop

Scubapro Nylon SMB

Scubapro Nylon SMB

Price range: 3,305฿ through 3,535฿

Sharkskin Titanium Chillproof Long Sleeve Full Zip Female

Sharkskin Titanium Chillproof Long Sleeve Full Zip Female

9,856฿

Deep Blue Safety Balloon

Deep Blue Safety Balloon

350฿

Mens, Titanium Jacket in black

Mens Sharkskin Titanium Jacket

12,710฿

Sharkskin Titanium Chill Proof Long Pants Female

Sharkskin Titanium Chill Proof Long Pants Female

8,178฿

xdeep-closed-dsmb-narrow-buoy

X deep closed narrow DSMB

Original price was: 2,770฿.Current price is: 2,220฿.

Scubapro Solo Mask

Scubapro Solo Mask

2,645฿

Womans Sharkskin Titanium Jacket Front

Womans Sharkskin Titanium Jacket

12,710฿

With Big Blue Diving Khao Lak

For divers who live and breathe the ocean lifestyle – spending days at sea, diving pristine reefs, and naturally wanting to protect the incredible marine world we’re passionate about.

Shell Yeah in blue text

Turtle Conservation Trips

We’ve partnered with Andaman Turtle Watch to offer an unique 4-night conservation-focused diving experience in the Similan Islands. These educational expeditions combines our renowned diving standards with hands-on turtle research opportunities.

Perfect for divers seeking an educational adventure that makes a difference.

Our Turtle Database

Meet the individual turtles we track with Andaman Turtle Watch. Each profile tells a unique conservation story—from first sighting to ongoing research. See citizen science in action.

Photo Gallery and Fish I.D.

Thailand’s crystal-clear waters harbour an extraordinary diversity of marine life, from the vibrant coral gardens of the Andaman Sea to the pristine reefs surrounding the Similan Islands.

Hiby's Lamellarid

Join our community of ocean-obsessed divers. Get first news of turtle conservation expeditions, marine research opportunities, and exclusive Living Blue adventures straight to your inbox.

Living Blue Newsletter Signup

* indicates required

Intuit Mailchimp