Bollogan was Seazarein before Kaleth, and was eager to make peace with everyone in the Big Blue. He and 4 of his line were killed in the surprise attack of Hokuu and Drinnok, sharks of great dislike of Kaleth and Bollogan. Kaleth was now the Seazarein, but was killed soon after in a sneak attack by Hokuu and his mako fin'jaa. Her last words went something like this " No, this was not Gray's fault, nor Takiza's. I was dumb not to kill him at first. Gray,  you are now Seazarein." And then she went on to swim the Sparkle Blue. (Sniff)