HILLSBOROUGH COUNTY, Fla. — Next time you head to Apollo Beach Nature Preserve you will see more signs warning people not to swim after three people drowned last week. 

It's an effort Hillsborough County officials hope will save lives. 

What You Need To Know

There are already signs posted that say swimming isn't allowed, but officials say many people disregard them. 

Last Friday, a Good Samaritan tried to rescue a father and his son who were struggling in the water. Sadly, all three didn't make it

Our partners at the Tampa Bay Times spoke with an associate marine professor from USF who said while the water at the preserve doesn’t look dangerous, there’s a very strong current that comes through the area when the tide falls and the water rushes back into the bay, creating a “tidal current.”

Hillsborough County also plans to have a staff member on-site for a few weeks to educate people on the dangers of swimming there and to monitor the situation.

In the meantime, the preserve area will be closed while the county posts the new "No Swimming" signs.