What used to be UnderWater World is now the Aquarium of Guam in the tourist district of Tumon. Guam’s only tunnel aquarium, one of the most popular spots for tourists and residents, features a 7-ft.

Thanks to the Monterey Bay Aquarium Research Institute and Monterey Bay Aquarium for partnering with us on this episode of SciShow. All of the amazing deep-sea video you are about to see was taken ...

Explore 8 mind-boggling natural optical illusions worldwide—from underwater waterfalls to glowing skies—that will leave you questioning reality. Planning a trip to India in April? Avoid these 10 ...