This is a coastal embark because the waves and mist are real nice but the weather ended up being worst than expected and the ocean froze. This provided an opportunity to dig a 2x3 shaft through the ice down to a cavern dozens of Z-levels below. Then we waited until May and suddenly it all thawed and behold this bounty from the sea:
Schools of fish, including anchovy, herring, hake and one seahorse; now herring has the massive schools property but neither hake nor anchovy do. We thought the fish were pulled because of the draining effect but no, after a short time they escaped the map and can't be found in the cavern below... What was that?
- From experience or game mechanics, is it typical to find schools of fish right after some ocean thaws during Spring or was this related to the sea being drained, were the fish curious or what?
- How come anchovy and hake were schooling despite seemingly not having this property (massive schools)?
- Is there a channel size which would guarantee the fish being pulled down (I used 2x3) i.e. would create a strong enough pull to stop the fish from escaping, if that's what happened (not seeing anything in the raws for each fish which would allow me to figure that out, if that's even possible) i.e. do fish have speed?