The SeaDoc Society and YMCA Camp Orkila present “Twenty-five things you didn’t know about sharks,” a talk by Gene Helfman.

It will be in the Larry Norman Lodge, YMCA Camp Orkila on Tuesday, Dec. 8 at 7 p.m. There will be a free dinner at 6 p.m.

Ever wondered what baby sharks and baby humans have in common? Or what kind of shark Huck Finn might have seen cruising past his raft on the Mississippi River? Or whether champagne corks are deadlier than sharks?

And because this is their annual family night, you won’t want to miss the free dinner (no reservations necessary) provided by Camp Orkila, starting at 6 p.m. Activities will be available during the talk for small ones, thanks to Camp Orkila staff.

Helfman is an emeritus professor in the Odum School of Ecology at the University of Georgia. He has a home on Lopez Island.

Copies of Helfman’s new book “Sharks: The Animal Answer Guide,” will be available for purchase and signing thanks to Darvill’s bookstore.

The 2015­-16 Marine Science Lecture Series is designed to “inspire the general public and to highlight important scientific issues in our region.” The lectures are free.