So I made a fresh modpack and was testing today, and low and behold I noticed that my otter pal that I found was getting stuck in the water while I gave them clams instead of swimming to the shore. It appears that when the otter is given one clam and gets tuck it just drops the clam... when it picks up a STACK of clams and gets stuck it drops stacks of clams. It appears that it drops the clams as many times as the number of clams it picked up on first testing. (Testing in a only this mod pretty much test world). But this is a fairly obvious duplication method and I figured it ought to be noted.
Forge 1.20.1,
Mod Version 1.20.1-2.1.6