Mermaids should not appear if you sink somebodies ship as they are mid spawn. This is unfair and has resulted in a lot of loot being lost because they can just sneak back and kill you unless you camp the mermaid.
Also mermaids should be an option to be requested rather than just appear in the middle of the sea. For example if you are trying to sneak up on somebodies ship a mermaid will just pop up and a big blue flare shows your position..
