Southampton Town Police will be collecting expired and unused medication Saturday, Oct. 26, from 10 a.m. to 2 p.m. at the David Crohan Community Center in Flanders.
Group for the East End will host a river otter site survey and monitoring workshop Saturday, Oct. 26, from 10 a.m. to 1 p.m. at the group's office in Southold
Riverhead Town will host Halloween Fest 2019 beginning Friday, Oct. 25, in downtown Riverhead.
Long Island Aquarium will host "Bats Barnacles and Broomsticks" Saturday, Oct. 26, at 11 a.m.
Food trucks, craft beer, local wine at Hallockville Museum Farm. Rain date:Oct. 27
Long Island Science Center will offer a "Mummy Madness" science workshop Saturday, Oct. 26, from 2 to 3 p.m.
Long Ireland will host its annual Halloween costume party Saturday, Oct. 26, from 6 to 11 p.m.
North Fork Community Theatre presents "Little Women the Musical" to open the 2019-2020 season. Performances will run Thursdays-Sundays, Oct. 10-27, with Thursday-Saturday shows at 8 p.m. and Sunday matinees at 2:30 p.m.
Long Island Aquarium will hold a Halloween masquerade ball Saturday, Oct. 26, beginning at 8 p.m.