Chonburi province has a number of interesting dive sites within the vicinity of its coast. Best time for diving is during September to October and January to April

Dive site: Koh Krok

Koh Krok is a small island, located 8 km from the provincial coastline, and readily accessible for divers. While most part of the shoreline is covered by rocks, there is a 100m stretch of sandy beach on the eastern shore of the island.

Shallow bed of hard corals sloping to the depth of 20 m. Large sea anemones can be noticed at the northern shore of the island. General condition makes it most suitable for performing check dives and snorkel. Currents can be moderately strong during tidal period

- Maximum depth: 20 meters
- Marine lives: hard corals, groupers, moray eels
- Underwater visibility: up to 5-6 meters

Dive site: Koh Sak

About 10 km west of Pattaya cape, Koh Sak is a small horseshoe shaped island. Koh Sak is also only 600m from its popular neighboring island, Koh Larn. On the northern side of the island, there is a 250m stretch of sandy beach that is very popular among tourists and beach goers alike. The other beach is on the southern side, which is accessible through a small beaten track from the larger beach on the northern shore.

Beneath the slopping sandy beach on the eastern shore lies a 100m stretch of hard coral reef. Due to the easiness of diving environment, Koh Sak is one of the more frequently visited sites for elementary scuba trainings and practices.

- Depth: average 10-15 meters
- Marine lives: tropical reef fishes and moray eels. If you are lucky, you may able to spot rare marine species such as Sea Moth and a variety of Nudibranch among the garden of "artificial corals" made from worn tires
- Underwater visibility up to 5-8 meters

Dive site: Koh Larn: Shark Point & Western Reef

Koh Larn, situated 7.7 km to the west of Pattaya cape, is an extremely popular island among tourists. The island covers approximately 4-squared km and is embraced by long stretches of beautiful sandy beaches. There are several bed of hard corals surrounding the island's shorelines. Despite its poor visibility, Koh Larn pier and Ta Wang beach are still favorite dive spots among uwphotographers as they are home of some rare creatures and variety of vividly colorful Nudibranch

- Maximum depth: 20 meters; average depth 12-15 meters
- Marine lives: tropical reef fishes
- Underwater visibility 6-8 meters

Hardeep Shipwreck

Hardeep wreck is a cargo vessel sunk during the War World II some 50 years ago. Presently, she lies on her starboard side at 27-29m depths. There is a huge artificial reef that has become a natural habitat to a variety of marine creatures.

- Maximum depth: 29 meters
- Marine lives: Stingrays, morays, pipefish, nudibranch and batfish
- Interesting activities: If visibility and water current conditions are favorable, divers may explore the vessel by swimming through several openings. Approximately 100m to the north of the wreck, divers can find two huge expired rusty bombs covered with bright yellowish soft coral.
- Underwater visibility 5-10 meters

Precaution: Safety of diving at this spot depends very much on tidal and current conditions. Divers should be accompanied by experienced dive leaders and exercise their caution while exploring the wreck. In addition, advanced buoyancy skill is mandatory if wreck penetration is to be attempted

Koh Phai Islands
This cluster of islands, not far from Pattaya, consists of Koh Phai, Koh Manvichai, Koh Learm and Koh Krengbadarn. Koh Phai, the largest among four islands, is under supervision of the Royal Thai Navy. Due to its ease of accessibility, Koh Pai is a popular destination among beach goers and divers

Dive site: Koh Phai
In addition to the beautiful coral reef surrounding Koh Phai, the Navy recently sunk a navy boat to create another artificial reef as well as boost the local diving industries. The decommissioned World War II 912 ton landing craft, HMS Kram, now lies peacefully on its keel just off the shore of Koh Phai after many years of faithful service in the Royal Thai Navy, thus, providing the local marine life with a new artificial shelter and a new attraction to diving enthusiasts.

HMS Kram lies upright on its keel in approximately 30 m of water. Two orange floating buoys, each tied to the bow and stern of the wreck, provide convenient descend lines for divers. Currently, it is the most well preserved shipwreck in Thailand

- GPS Coordinate: Lat. 10 15 054 N. Long. 100 41 027 E.
- Maximum depth: 27-29 meters, the shallowest part of the superstructure is at 16-17 meters
- Marine lives: Nudibranch, reef fishes, soft corals
- Underwater visibility 3-5 meters

* Best dive period- May to October subject to favorable tidal condition. Check the local tidal table for best condition.

Dive Site: Koh Klung Badan

General condition- Koh Klung Badan dive site is considered having one of the healthiest coral reefs among dive sites with close proximity to capital Bangkok.

- Depth: average 15-20 meters
- Marine lives: Parrotfishes, triggerfish and giant clams, seafans, hard corals and other marine life
- Underwater visibility: 7-10 meters

Dive Site: Koh Manvichai

Koh Manvichai is a small island southwest of Pattaya City. This is a wall dive. Sea whips and hard corals are featured at this site.

ง Maximum depth: 20 meters, average 15 meters
ง Marine lives: Reef fishes, bamboo sharks, schools of yellow sweet lips and barracudas
ง Underwater visibility 8-10 meters

Dive Site:Petchburi Bremen Wreck

Petchburi Bremen was a cargo liner sunk in the 1930s from bombing raid during WW II. Presently, it lies with broken hull on the seabed.

- Maximum depth: 22-25 meters
- Interesting activities non-experienced divers and dive leaders can sometimes find it difficult to locate the separated remains of the broken hull
- Marine lives: schools of barracudas and other reef fishes
- Underwater visibility 6-8 meters

Dive Site: Koh Chan
It features a variety of hard and soft corals among narrow canyons

- Depth: average 20-25 meters
- Marine lives: snappers, giant clams, nudibranch, sea anemones
- Underwater visibility: 10-12 meters

Dive Site: Koh Lin
Koh Lin is a small island with beautiful sandy beach on the western edge of the Koh Pai islands. There are large underwater canyons with abundant hard corals and seafans off the eastern shore of the island

- Maximum depth 20 meters; average depth- 14-16 meters
- Marine lives: Bamboo shark, school of barracudas and blue-spotted rays
- Underwater visibility 6-8 meters