Rayong Aquarium was established by Department of Fisheries since 1997, however the construction finished in May, 2004.

The construction cost in total 193,197,015 baht. Nowadays Rayong Aquarium is organized under the Eastern Marine Research and Development Center, Department of Fisheries, Ministry of Agriculture and Co-operatives, with the objectives as follows

1. Educate visitor on marine life, many species of fishes and other marine organisms. Visitors will learn about fisheries practice as well.
2. Conduct research on marine life.
3. Serve as a recreation site and promote tourism.

Main Facilities : divided into 3 sections
1. The Marine Qquarium
2. The Exhibitions
3. The Shell Collection

1. The Marine Aquarium
1.1 Marine fishes, 43 indoor tanks capacities range from 1-4 tonnage
• Coral reef fishes : anemonefish, butterflyfish, angelfish, parrotfish, wrasse, giant moray, sea horse, spiny lobster etc.
• Economic fishes : groupers, snapper, babylon, Locust Lobster, shrimps, crabs.
• Odd shaped and poisonous fishes : lionfish, stonefish, porcupinefish, horse-shoe crab, sea urchin.
• Touch pool : ecosystem of shallow water coral reef e.g. sea star sea cucumber.

1.2 Big Tanks
• Cylinder tank 40 tons : mackerel and pelagic fish
• Turtle pool 280 tons : sea turtles, the endangered animal e.g. green turtle, hawksbill turtle.
• Tunnel tank 400 tons : sizable fish e.g. giant grouper, sweetlip, Eagle ray, Cobia, Theadfinned Trevally, Golden Trevally.

2. The Exhibitions
• Coastal Resorce Rehabilitation Project under Her Majesty the Queen's advisory at Pattani and Narathiwat
• Small-scaled, Commercial and Offshore fisheries fishing boats and fishing gears
• Model of marine mammals
• Turtle migratory monitoring program, whale and dolphin, shark, gaint clam on display.

3. The Shell Collection
One hundred and forty varieties of correctly identified shell collection were on display.