ATLANTIS MARINE WORLD
431 East Main Street,
Riverhead.
208-9200
Shark and tropical fish tanks, piranha feeding, children’s programs, daily exhibit lecture, and sea lion shows.

EAST HAMPTON TRAILS PRESERVATION SOCIETY
P.O. Box 2144,
Amagansett.
329-4227
On Wednesday at 10 a.m., a two-miler will take participants through a portion of the Nature Trail, a k a the Duck Pond, and past some of East Hampton Village’s most gracious, historic houses. Meeting place is the preserve on David’s Lane, just west of Egypt Lane. 324-5799

GROUP FOR THE EAST END
2405 Main Street, Suite 7
Bridgehampton
537-1400
54895 Route 25, Southold. 765-6450

MONTAUK OBSERVATORY
Third House, Theodore Roosevelt County Park, Montauk Highway

MONTAUK POINT STATE PARK
50 South Fairview Avenue
Montauk
668-3781


SOUTH FORK NATURAL HISTORY MUSEUM
377 Bridgehampton-Sag Harbor Turnpike.
537-9735

SOUTHAMPTON TRAILS PRESERVATION SOCIETY
P.O. Box 1171
Bridgehampton
537-5202
On Sunday at 10 a.m., hikers will walk the Whiskey Hill Loop, a moderately paced 1.5-miler with ocean views and a chance to see two kettlehole ponds and an enormous glacial erratic. Meet at Mill Path off Lopers Path East in Bridgehampton. 537-0660