The curious minds at What If examine the possibility of a hidden Megalodon still lurking in the Mariana Trench.

The Guam Museum is connecting the community to the wonders of the deep sea with its first-ever "Puengen Tåsi Siha" or ocean nights at 6 p.m. on Sunday, May 25.

The oceans hold countless secrets - here are five mysterious underwater sites that still puzzle scientists to this day. Dive ...