Minato's going to ask around Lyrabar to see if seals are known to live nearby or migrate through the area. Maybe there's an island that they gather at in the Sea of Fallen Stars?

Gundam's staying with the seal to protect him from predators learn from his dark powers.

Edit: It's just occurred to me that Diego Fleur's a water nerd. If Minato can't find answers around town he'll try to get an audience with Diego to ask about seals in the Sea. Are they normally around here? Where do they hang out?