Why do Xemes congregate around whales or large fishing vessels at sea?

To feed on organisms stirred up by the larger animals or discarded by fishing operations

The feeding strategy of the Xeme while out on the open ocean demonstrates a highly opportunistic approach to utilizing marine food sources. While they primarily consume small fish and marine invertebrates snatched from the surface, they are known to actively seek out associations with larger entities in the marine environment. Specifically, they will gather around whales or large commercial fishing vessels. This behavior is not random; they capitalize on the activity of these larger entities. The movement of whales or the waste generated by fishing operations often stirs up or discards smaller organisms, which the Xemes then consume efficiently.