Lol watch them exchanges wiggles!
If you see a rise in BUYS you know the whales are about to take a big meal. They might vomit shortly after though so don't hold too long.

Btw did you know whale waste is highly valuable? Not trying to be funny here it's actually a real thing.

https://www.scientificamerican.com/article/strange-but-true-whale-waste-is-valuable/

Hive Whale waste though.... I'm not sure if that has much value outside of the circle of Dutch Rudders.