I am a newbie here, and for a few days am trying to complete the title promotion missions.Now i had to fight a group of sea monsters which had cannons on them!Yes, thats what it says in the battle reports at several places- that the sea monster fires its cannons, blazing light comes from the portside of the monster, and such. Now isn't this weird, and be fixed?

Perhaps the Sea Monster lashes your ship with its tail or gouges your hull with its teeth. Good Eye for detail, surprised that went unnoticed so long.

Perhaps it is not a sea monster at all, lets not forget Captain Nemo and his amazing ship that could sail under the sea sinking many a ship, all because of a personal vendetta he had.

We don't have plans to write a different engine for sea monsters (3 different in total number). They do use the same battle engine that is used for ship to ship battle.

just a suggestion, why not just make the battle screen read "Tentacles" or better yet something that sounds cooler, that just functions on the same battle engine, but makes a little more sense then sea monsters that fight with cannons?

That's a great idea actually
Still we need to rewrite some parts (like broadside) etc but it is not that big deal. I will approve it.