The National Oceanic and Atmospheric Administration, which has jurisdiction over the animals, says they're doing fine.
They say the dolphins in the Shrewsbury and Navesink rivers aren't trapped, stranded or out of their natural habitat. And observations as recently as yesterday afternoon show the dolphins acting normally, feeding on small fish in the rivers.
But animal rescuers want them either removed or coaxed out of the river and back out to sea.
They cite several previous instances in which dolphins took a wrong turn, ended up in the river and died when weather got too cold.
Two of the original group of 15 have already died this year.