EVENTS

Estuary Explorations —

9 a.m.-1 p.m., meet at the I-95 Exit 70 commuter lot in Old Lyme; Paul Spitzer and Jim Arrigoni lead trips along the lower Connecticut River; every Saturday in May; $30, $25 students; registration required; ctaudubon.org/explorations.

East Lyme Historical Society Flea Market —

9 a.m.4 p.m., Thomas Lee House, West Main St., Niantic; collectibles and antiques from vendors across the state, plus tours of the house; through Sun.; free; eastlymehistoricalsociety.org.

10 a.m., Waterford Public Library, 49 Rope Ferry Road; free; (860) 444-5805.

10 a.m., Tefftweald at Birchenturn, 280 Grindstone Hill Road, North Stonington; twice-monthly hiking club led by Denison Pequotsepos Nature Center naturalists, geared toward seniors or parents with young children; $4.25 members, $5 nonmembers; registration encouraged; (860) 536-1216.

10 a.m.-5 p.m., Wilcox Park, 45 Broad St., Westerly; fine arts and crafts festival with

Red Carpet Foreign Films — Easy Does It Hiking Club — Virtu Art Show —