In recent years though, Bottini has found good reason to believe there are, once again, otters on Long Island. Not a huge number of them, mind you, but enough to spark his interest. First came reports of the occasional otter sighting, accidental trapping or roadkill, mostly well to the west of the East End, though there were scattered instances reported on both the South and North Fork as well as Shelter Island — including one that ended up in a muskrat trap near Mecox Bay.
More compelling evidence came in April 2006, when a river otter was captured on a video camera that was set up to record alewife migration at Big Fresh Pond in North Sea.
Then Bottini came upon some compelling river otter evidence himself in the Northwest Woods section of East Hampton. Interestingly enough, it was the arrival of another mysterious animal that led him to that evidence — the beaver (or beavers) which showed up in the Grace Estate a couple of years back and have called the pond home ever since.
“At Scoy Pond I was intrigued by the arrival of the beaver,” recalls Bottini. “That first winter it was here, I went on the ice and mapped the trees it had chewed. I found the lodge and looked at one of the paths near it — and saw the otter scat.”
http://www.otterjoy.com/newsarchive2009/news1236.html