Park rangers in Colorado rescued a woman from drowning at the Horsetooth Reservoir on Thursday afternoon.

Maine authorities investigate paddleboarder Sunshine Stewart's murder near Crawford Pond, urging calm amid community fears of a possible serial killer in the region.

Police in Maine are investigating the death of a paddleboarder near a campground in rural Maine as a homicide and asking the public for help finding the killer.

Recreation officials are reminding Utahns about the dangers of floating the Provo River after a paddleboarder got trapped in the 55-degree water for about a half hour.

The body of 48-year-old Sunshine "Sunny" Stewart of Tenants Harbor was found on July 3. Her death was ruled a homicide.

Stunning new video showed a great white shark just feet from a paddleboarder off a Massachusetts beach. It’s just the latest shark encounter caught on tape across the U.S. this summer. NBC News’ Sam Brock reports.

Public officials are urging recreators to be safe following a death at a popular Colorado reservoir due to lack of life jacket.