22 November 2025 – Similan Departure
Our guests boarded at 5 PM, welcomed with warm smiles, cool beverages, and the soft glow of a Thailand sunset. Staff escorted guests to their cabins, completed safety orientations, and introduced emergency equipment and procedures.

We gathered in the salon for introductions, both guests and staff sharing excitement for the adventure ahead. Chef Pon prepared a full Thai-style dinner, beginning with fragrant Tom Yum Kung — hot, sour, and bursting with traditional flavor. After dinner we toasted the start of our voyage with champagne as the Thailand Aggressor gently set course toward the Similan Islands, engines humming softly through the night.

Tomorrow promised turquoise seas, coral walls, and the first bubbles of a week underwater.

23 November 2025 – Similan Islands
Our checkout dive took place at Zodiac, where divers familiarized themselves with gear setup and buoyancy. Spirits lifted immediately when a majestic Napoleon wrasse glided past, shimmering blue in the morning light.

Second dive: Honeymoon Bay — towering sea fans swayed with gentle current as guests explored the reef edge.
Third dive: West of Eden, where colorful hard and soft coral cascaded over the ridge, and a tiger mantis shrimp revealed itself among the rocks.
Fourth dive: Num Chai Bay offered relaxed afternoon conditions, later transforming into our night dive site. Under torchlight we found lobster, vibrant nudibranch, and the reef alive beneath darkness.

24 November 2025 – Similan Northbound
We opened the day beneath the dramatic stone formations of Elephant Head Rock, weaving through swim-throughs and discovering hidden alcoves teeming with fish.
Second dive: Deep Six — giant sea fans, patches of radiant soft coral, and sweeping blue water.

Afternoon at Koh Bon / West Ridge revealed cascading reef ledges and dancing light.
At sunset we descended into Tachai Reef where blacktip reef sharks patrolled in the dark, circling curiously at the edge of our lights. Unforgettable.

25 November 2025 – Tachai Surin Islands
Our morning began at Tachai Pinnacle. Visibility was modest, but fish life was tremendous — swirling schools surrounding the pinnacle like a living storm. Greg, remembering a briefing detail, spotted a Maldives sponge snail and proudly shared the find.

Dive 2 returned to Tachai Reef before crossing north to Koh Surin.
Dive 3 brought us to Ao Pakkard — one of Thailand’s healthiest hard-coral systems, with massive table coral dominating the landscape.
Night dive here revealed still more — macro life tucked into coral crevices beneath shimmering sand movement.

26 November 2025 – Surin Island Weather Shift
Our plan was Richelieu Rock, but swell conditions forced a delay. Instead, we explored Surin’s pristine sites, beginning again at Ao Pakkard where sunlight finally broke through, illuminating coral in full color for the first time all week. Guests loved it.

Dive 2: Torinla Pinnacle — sloping reef, soft sand, and a delightful highlight — a Pikachu nudibranch.
Dive 3: Ao Suthep — sprawling coral fields and busy reef life.
Sunset dive: Ao Suthep again, where two cuttlefish drifted through the dusk and eels hunted across the sand.

27 November 2025 – Richelieu Rock
At 4:30 AM we crossed east with hopeful seas — and luck was with us. We reached Richelieu Rock and completed three thrilling dives at one of Asia’s greatest reefs.

What we saw:
Giant trevally, barracuda, rainbow runner, white-eye moray, vibrant peacock mantis shrimp, scorpionfish, batfish, and millions of tiny fish that blanket the pinnacle in silver motion. A breathtaking spectacle.

After the third dive we cruised south to Tachai Reef for another night dive — and again blacktip sharks appeared, confident and curious. It was also Thanksgiving, celebrated Aggressor-style — dinner, laughter, and stories shared long into the night.

28 November 2025 – Final Dives & Celebration
Our last full day of diving began at Tachai Pinnacle, rich with hard coral, soft coral, sea fans, and dense fish traffic in every direction.
Dive 2 returned to Koh Bon / West Ridge where visibility improved and the ridge’s structure became brilliantly defined.

A four-hour return to port followed, and that evening we hosted a final barbecue — seafood, fresh meats, Thai seasoning, and great company. Six guests earned Iron Diver recognition: Marc, Eric, Greg, Kristin, Chandra, and Janina.

With gratitude and cheers, Bobby and staff thanked guests warmly as our journey came to a joyful close.