A young dolphin swum into the harbour 10 days ago.
The common dolphin was monitored by Jersey vets and volunteers from the British Divers Marine Life Rescue, who said she was healthy and feeding well.
However, it is thought the animal was so young, it should probably have been with its mother.
A young dolphin is still stuck in Jersey Harbour, after being spotted there yesterday.
It's thought the animal, which is currently in the tank berth in the marina, is young enough to meant to be with its mother.
John Hamilton from New Era Vets has been out on the water to see the dolphin, who is said to be still healthy and keen to swim alongside the boat.
Teams tried to herd the sea creature into deeper water, but failed.
She will be monitored over the weekend and assessed on a day to day basis by British Divers Marine Life Rescue volunteers and Vet John Hamilton.
The weekend event coincides with International Pride Month and the 51st anniversary of the Stonewall riots.
The scheme has been backed by the island's Lieutenant-Governor, and is the first of its kind in the Channel Islands.
Sunny spells and isolated light showers. After dusk fair spells with isolated showers.