The Milford Marine Institute will hold an open house at the Gulf Pond Museum on Saturday, June 6, from 9 a.m. to noon.
The museum is located at 138 Shadyside Lane at the old wastewater facility site. On display will be the yellow helmet gastropod (cassis cornuta), recently acquired. This mollusk may be the largest of its kind in the world, state Tim Chaucer, the museum director.
Also on display will be a 19th century Sioux arrow as well as a 19th century Sioux beaded hatband.

Recently acquired moccasins from various tribes will be on display, as well as a five-inch long fossilized ancient megalodon tooth.
Children visiting the museum will receive a shark tooth.