River otters hold 152 New Jersey records strung along the state’s waters, heaviest in Cape May and Cumberland counties, where the Dennis Creek, Cox Hall Creek, and Tuckahoe wildlife management areas guard stretches of bayshore marsh. Inland, reports reach the Pine Barrens around Wharton State Forest and Batsto Village, the wetlands of Great Swamp National Wildlife Refuge, and the freshwater marshes of Assunpink.
Equally at home in salt marsh and cedar water
An otter needs two things, water that holds prey and a bank it can haul out on, and New Jersey’s mix of tidal creeks, coastal bays like Barnegat Bay, dark Pine Barrens rivers, and inland ponds supplies both. Fish make up most of its diet, backed by crayfish, frogs, and the occasional small waterbird. Otters are more often detected by sign than seen: smooth slides worn into muddy banks, webbed tracks along the shore, and communal latrines where droppings accumulate as scent posts.
Most visible in late winter
Otters never hibernate, and New Jersey’s reports crest from February through April, when the animals travel and court along shorelines still free of concealing vegetation. A family can range widely along a drainage, so a stretch of marsh may host otters one week and stand quiet the next, with only the slides to say they passed through.
Status in New Jersey
NatureServe ranks the river otter S4, Apparently Secure, in New Jersey. The species is native to the state, and USGS NAS does not list it as nonindigenous.
