> Return to Yamame and ask about how the spiders are holding off the shark. Also question her if she knows somebody who might have done this.
> After a little break, head with Roc (and possibly Yamame and/or Kisume) deeper into the Underground for potential survivors.
You ask Yamame how they're doing.
"Its tough, But I think we should have this thing wrapped up. ...What are we going to do about the water though? It won't get unpolluted, and clogging a part of the water system could end badly for us..."
You tell Yamame you're going to check out the rest of the underground, she nods with a sigh. "Who knows, You may find something we missed. Kisume'll go along with you, She knows the way."
You summon THE ROC and head deeper into the tunnels.