Sea Life Bangkok Ocean World, formerly known as Siam Ocean World, is Thailand's largest aquarium located beneath the Siam Paragon shopping mall in central Bangkok. Spanning over 10,000 square meters, this underwater world houses more than 30,000 marine creatures from across the globe, representing over 400 different species from the depths of the ocean to freshwater ecosystems. The attraction is designed as an immersive journey through various marine habitats, allowing visitors to experience aquatic life from different perspectives.

The aquarium is structured into distinct themed zones that replicate diverse marine environments. Visitors can explore the Tropical Ocean Zone with its colorful coral reefs, the Deep Reef Zone featuring unusual deep-sea creatures, and the Shark Walk where guests traverse a glass-bottomed pathway above circling sharks. The Rocky Shore Zone recreates coastal ecosystems, while the Rainforest Zone showcases freshwater species from tropical river systems. The centerpiece of the attraction is the Ocean Tunnel, a 270-degree transparent passage that offers panoramic views of marine life swimming overhead and alongside visitors.

Sea Life Bangkok offers several interactive experiences that go beyond simple observation. The Touch Pool allows visitors to gently interact with starfish, sea cucumbers, and other hardy marine creatures under staff supervision. For more adventurous guests, the Ocean Walker experience provides the opportunity to don specialized helmets and walk underwater among the fish without needing diving certification. The attraction also offers glass-bottom boat rides across the main tank and behind-the-scenes tours that reveal the complex filtration systems and feeding routines that maintain the aquarium's delicate ecosystems.

Educational programs form a significant component of the Sea Life experience, with regular feeding sessions accompanied by informative talks from marine experts. The Ocean Ranger program allows younger visitors to become honorary staff members for a day, learning about marine conservation while assisting with feeding sessions. Conservation messaging is integrated throughout the attraction, with exhibits highlighting threats to marine ecosystems and the aquarium's participation in breeding programs for endangered species like bamboo sharks and seahorses.

Notable inhabitants of Sea Life Bangkok include blacktip reef sharks, leopard sharks, giant groupers, and graceful stingrays in the larger tanks. The attraction showcases unusual creatures like the giant Pacific octopus, weedy sea dragons, and bioluminescent jellyfish in specialized display areas. The penguin zone features a colony of gentoo penguins in a temperature-controlled habitat, while the otter enclosure houses playful Asian small-clawed otters. Throughout the day, feeding demonstrations for penguins, sharks, and other key species provide visitors with insights into the behavioral patterns and dietary requirements of these fascinating marine animals.