My understanding is those maps were for display and not actual use by sailors. The creatures are meant to be fun and fanciful to the not so adventurous person w

My understanding is those maps were for display and not actual use by sailors. The creatures are meant to be fun and fanciful to the not so adventurous person who keeps it on display at their home and uses it to entertain guests. I base this on buying a few very old maps. One with California as an island, well after it was understood not to be. Simple things were pretty novel in the past.