The Temple Israel Polar Bears will stage their annual New Year's Day fundraising plunge into Long Island Sound this year to benefit a nonprofit group that provides mental-health services to children.

The eighth annual foray into what likely will be a frigid Sound is planned at 10:30 a.m. on Thursday, Jan. 1 at Compo Beach. Organizers are looking for participants to take pledges for the Child Guidance Center of Mid-Fairfield County.

Patricipants may register online or by phone.

The Child Guidance Center annually treats about 2,000 children with a wide range of mental health and/or behavioral problems, according to its website. It serves clients in Westport, Darien, New Canaan, Norwalk, Weston and Wilton.

In a news release, the Polar Bears said they have raised nearly $600,000 for nonprofit organizations since their first Polar Plunge in 2008. Among past beneficiaries are Autism Speaks, Make-A-Wish Foundation CT and United Cerebral Palsy.

The group said sponsorship opportunities are available.

To register for the plunge or for more information, visit www.tipolarbears.com or call Marissa Mangone at 203-858-5340 or Tom Patterson at 917-653-7384.