I have done the arrows and got past seamonster #2. Now, seamonster #2 is behind the gate behind me, and a reward is behind the gate in front of me. It looked obvious that I was supposed to shoot the ring connected to the chain on top of the gate in front of me, but I can't see what to do at this point... it must be simple because no one else has asked... but ive been sitting here for like an hour. help?
EDIT: omg... i found it. ignore this.