Another dolphin has died after it came ashore at White Sand beach in Holland Bay, St. Thomas on Wednesday.
A statement from the National Environment and Planning Agency (NEPA) said it received a report about 8:30 am that there was a stranded dolphin on the beach.
A response team from NEPA, the Veterinary Services Division and the University of Technology responded.
However, the animal had already died.
The incident is the second of its kind in three days.
On Monday, two dolphins were found on the beach.
Several unsuccessful attempts were made to re-float one of the animals that was still alive.
The dolphin was later euthanised after veterinary professionals on location determined that continued attempts to re-float the animal would be futile.
Monique Curtis, Manager of the Ecosystems Management Branch at NEPA, said the agency will be carrying out surveillance of the area for other stranding and investigations into the possible cause of the incidents.
NEPA said the species identified on the beach has been confirmed to be the pygmy killer whale, which is a small member of the oceanic dolphin family.