Abalone

The abalone (アワビ, Awabi) is a type of deep sea creature found only in ; this game marks the first appearance of Abalone.

In New Leaf
Upon donating an abalone to the Museum, it can be found in the large pool in the first room of the Ocean exhibit, along with many other species of deep sea creatures. It is found close to the entrance of the large saltwater exhibit. The exhibit has this to say about the abalone:

"Abalones grow less than an inch a year, so it takes several years for them to grow to full size. They are related to ear shells and have been used in celebrations and offerings since ancient times."