Sailing

If you were at sea for an extended period of time, does a mermaid really represent the ideal fantasy? You can't do anything with bottom half fish. Inverted mermaid, that makes sense. Limited vocal capacity, no arms to fight you off with, legs mean they swim slower and you can do stuff after you catch them. I'm just saying, the seafaring explorers of old had it backwards. If you have to go half fish, top half fish makes more sense.