In New LeafEdit
After the player donates a red king crab 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 can be found along with the other crab species. The exhibit has this to say about the red king crab:
"These are one of the most popular and sought-after species of crab in the world. They have eight legs, including their claws, but also two small legs under their carapace, making 10 in all. At full size, their leg span can easily reach more than one yard wide, making them big ocean dwellers. Their thick legs are packed with meat, making them a prized catch for many fishers around the world."