Some beach-goers at Compo Beach in Westport were treated to the sight of a humpback whale in the Long Island Sound Friday morning.

The Westport Police Marine Unit says it also received a call in the afternoon about two more whales by Northport, Long Island, so they believe a pod of whales somehow made its way into the Sound.

The marine unit says it was worried because one whale, believed to be about 40 feet long, was in shallow water.

Officers say the Westport and Norwalk marine units kept a perimeter around the whale until it was able to swim into deeper waters.

Officials say boaters should cut their engines if they see a whale near them in the water to avoid collisions.