The 17-year cicadas are back on Long Island, and with them their high-pitched whistling.

Chris Simon is a professor of ecology and evolutionary biology at the University of Connecticut. She traveled to Wildwood State Park in Wading River to map the cicadas. It's not her first trip - she was here in 1999 and 1982. She says there are plenty of people who love the cicada.

"Period Cicadas are one of the seven wonders of the insect world," says Simon.

The insects emerge from the dirt every 17 years to mate. They then die within a few weeks.

Simon says the cicadas can be observed in different areas of Wildwood State Park over the next few weeks.