Updated

Three juvenile beluga whales have surfaced in two rivers along the New Jersey shore.

They are believed to be the same whales that appeared off Rhode Island on Mother's Day and in Long Island waters over the Memorial Day weekend.

The whales spent time in the Shrewsbury and Navesink rivers at the northern end of the shore.

Marine Mammal Stranding Center director Bob Schoelkopf tells the Asbury Park Press (http://on.app.com/1GVbyeB ) the rivers can become death traps for whales and dolphins because their headwaters become unnavigable.

Schoelkopf hopes the recent heavy rainfall will lower the salinity in the rivers and the whales will return to sea.

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Information from: Asbury Park (N.J.) Press, http://www.app.com