Remember as a kid when you'd try to swim across a 25-yard pool without taking a breath, or you'd take a big gulp of air in an attempt to touch the 12-foot bottom? While those were likely innocent ...

KILPISJÄRVI, Finland (AP) — As bubbles rippled across the frigid Finnish lake, diver Daan Jacobs emerged from a hole carved out of the thick, crackling ice. Scientists say don’t forget about plants.

Professional diver Andrew Ryzebol tells PEOPLE exclusively of his risky underwater explorations 200 feet beneath uncharted ice with nothing but a mask and fins Ontario Freedivers Andrew Ryzebol is a ...