Underwater World Pattaya is Thailand's most exciting aquarium, bringing a slice of the ocean depths to Pattaya City in a series of exhibits that take you from sandy beaches and a shallow rock pool teeming with colorful coral to the open ocean where predators swim, and here you can enjoy live feeding shows. And watch the marine life up close in the 100m high acrylic tunnel with all the wonderful colorful creatures swimming in the water above you and all around you.