OAK BEACH, N.Y. (AP) — A dolphin has been rescued from a sandbar off the southern shore of Long Island.

The Risso's dolphin is a 9-foot, 600-pound female. Staff from the Riverhead Foundation for Marine Research and Preservation made the rescue Thursday near Oak Beach with help from the Coast Guard.

Foundation rescue program director Kimberly Durham says the dolphin will be closely monitored. It is being treated for dehydration and gastric bleeding.

It's the second Risso's dolphin recovered by the program in two weeks.

An adult female was found in the Hudson River 26 miles north of Manhattan. It later died of what officials believe is starvation from plastic bags blocking her stomach.

dolphin rescued oak beach new york

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  • A dolphin surfaces in the Gowanus Canal in the Brooklyn borough of New York, Friday, Jan. 25, 2013. The New York City Police Dept. said animal experts were waiting to see if the dolphin would leave on its own during the evening's high tide. If not, they plan to lend a hand on Saturday morning. According to authorities at the scene, the dolphin appeared to be adventurous, rather than stranded.(AP Photo/Richard Drew)

  • A dolphin surfaces in the Gowanus Canal in the Brooklyn borough of New York, Friday, Jan. 25, 2013. The New York City Police Dept. said animal experts were waiting to see if the dolphin would leave on its own during the evening's high tide. If not, they plan to lend a hand on Saturday morning. According to authorities at the scene, the dolphin appeared to be adventurous, rather than stranded.(AP Photo/Richard Drew)

  • A dolphin surfaces in the Gowanus Canal in the Brooklyn borough of New York, Friday, Jan. 25, 2013. The New York City Police Dept. said animal experts were waiting to see if the dolphin would leave on its own during the evening's high tide. If not, they plan to lend a hand on Saturday morning. According to authorities at the scene, the dolphin appeared to be adventurous, rather than stranded.(AP Photo/Richard Drew)

  • A dolphin surfaces in the Gowanus Canal in the Brooklyn borough of New York, Friday, Jan. 25, 2013. The New York City Police Dept. said animal experts were waiting to see if the dolphin would leave on its own during the evening's high tide. If not, they plan to lend a hand on Saturday morning. According to authorities at the scene, the dolphin appeared to be adventurous, rather than stranded. (AP Photo/Richard Drew)

  • A dolphin surfaces in the Gowanus Canal with debris on its nose, in the Brooklyn borough of New York, Friday, Jan. 25, 2013. The New York City Police Dept. said animal experts were waiting to see if the dolphin would leave on its own during the evening's high tide. If not, they plan to lend a hand on Saturday morning. According to authorities at the scene, the dolphin appeared to be adventurous, rather than stranded.(AP Photo/Richard Drew)