Can dolphins survive winter in Jersey?

A group of bottlenose dolphins have been confounding humans since they took up residence in two rivers near the Jersey shore six months ago.
Now that it's winter, some people are worried they'll never make it out.
Three dolphins have died out of the original group of about 15 that spent the summer and fall in the Shrewsbury and Navesink rivers, waterways just north of Asbury Park.

Federal wildlife experts say the remaining dolphins are healthy, and should be able to make it through the winter if they choose to stay.
They cite the cases of dolphins that successfully spent winters in Massachusetts, Virginia and even northern Scotland.

But some animal advocates worry the dolphins will meet the same fate as four that drowned in the Shrewsbury River in 1993 when ice closed in on them, or the 26 dolphins killed by a sudden freeze in 1990 in Texas' Matagorda Bay.

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A better question is ... Can anything survive winter in Jersey?! Or, even better yet ... Can anything survive in Jersey?!