Stranded Risso's Dolphin Dies On Hamptons Beach

AMAGANSETT, NY — A Risso's dolphin died after stranding on a beach in Amagansett Friday, officials said.

According to the Atlantic Marine Conservation Society, the dolphin was examined by AMSEAS' stranding investigations team on Saturday. The adult male Risso’s dolphin was 9.5 feet long, AMSEAS said.

"The animal’s size, the amount of scarring and worn teeth indicate it was an older adult animal," AMSEAS said.

In addition, AMSEAS said, the dolphin showed signs of possible viral infection, and was very emaciated — it was very thin, with poor body condition — with no presence of food in his digestive tract.

The team also documented parasitic infection in the animal’s lungs and liver, AMSEAS said.

The Risso’s dolphin is one of 14 animals that AMSEAS has responded to in 2025, the rescue group said.

The team has documented two common dolphins, one harbor porpoise, one bottlenose dolphin, one harp seal, one gray seal, three Kemp’s ridley sea turtles and three Atlantic green sea turtles.

One unidentified seal was also reported to AMSEAS team but was not able to be examined, officials said.

All strandings of sick, injured, or deceased seals, sea turtles, dolphins and whales should be reported to the New York State Marine Mammal and Sea Turtle Stranding Hotline, at 631-369-9829, AMSEAS said.

AMSEAS is a 501 (c) (3) non-profit organization located in Westhampton Beach.