We board the ship and meet someone you just how far up shit creek he is, and the large amount of paddles of a huge ass boat might not be enough to help.
We decide to get out of boat before half the crew turn out be rats (probably snakes actually tzaril feature heavily in at least some of the schemes of the island) or something but even your boat out was trapped.
I take about how spider that aren't magically big don't really work for assassinations and ants would be better. Spiders aren't going to waste their precious poison on something too big to kill and eat.