What an amazing experience! First, we went to the Underwater World, which was terrible – smelly, stuffy, and had very little to see, with a short, uninteresting route. We were so disappointed that we told the KLOOK staff we wanted to cancel this aquarium activity, but since it was already past the 24-hour cancellation window, we couldn't cancel and had to go anyway. When we got off the car, we thought it would be a small venue based on its exterior, especially since it was much cheaper than Underwater World. Upon entering, there was a slight smell, but it was acceptable. At first glance, we thought we had seen everything, but we were wrong! There were arrows guiding us to continue walking, with different zones. After walking through the first two zones, the air started to become fresher, with fans and air conditioning; the ventilation system was excellent. This allowed us to enjoy the visual impact more comfortably. Having visited aquariums in Japan, Korea, Taiwan, mainland China, and Hong Kong, this one was different from the others. It had many novel and peculiar species and animals that looked strange but were very captivating. It's definitely worth adding to your Pattaya itinerary. There were no children with us, but the adults (from 20s to 60s) all had a great time. It would be even more enjoyable for children, as they can touch and feed small animals. We spent almost two hours there before leaving – it was fantastic! PS: The staff casually placed a large python, thicker than my arm, on the ground to let it crawl around and even wiped it down on the spot. It was a bit scary because it was so sudden and a little too close for comfort. This made me pay extra attention to whether the locks were secure in areas with snakes and four-legged animals later on, haha.