OK so I have a completely different question that might seem a bit weird - What's the "theme" for the sea units? I mean like the flare path's theme is sun-related, the mono's is shape-related, the dagger's is medieval-related, the crawler's is bug/poison-related, and the nova's is space related. but what's the risso's? The units in its path are as follows: Risso, Minke, Bryde, Sei, Omura. I can't see any theme between them.