Sea grapes

Sea Grapes are a type of sea creature in the, introduced in.

While initially absent from, Sea Grapes were added in the 1.3.0 Free Summer Update in July 2020.

In
Upon donating the Sea Grapes to the museum, it can be found in the large pool in the first room of the sea exhibit, along with many other species of sea creatures. It is found in the corner of the pool nearest to the entrance. The exhibit has this to say about the Sea Grapes:

In
When donating to the museum, Blathers will say the following:

The Sea Grapes are located in the coral reef tank in the museum.

Real-world information
Sea grapes, Caulerpa lentillifera, are a type of edible green algae native to the Indo-Pacific. It is eaten by people across the region, from Bali, Indonesia to Okinawa, Japan. It is also cultivated in the Philippines, capable of producing 12-15 metric tonnes per hectare of pond used.