Girls are not born "with fins", and there are no "real mermaids", so the question is kind of pointless.
yes
Their tail is really fast but with human arms it makes it go speed boost
There is three types of mermaids. The Northern lake mermaid, whom has fins and ugly coloured skin. there is also the Caribbean mermaid who has blue dreadlocks and ugly mottled skin. Then there is the original mermaid. this mermaid has long golden hair and has a fishy tail.
Mermaids basically have the upper body of a woman and the tail of a fish. They usually look like a beautiful woman with either the tail of a fish OR the tail of a whale. A lot of them have weird skin or hair colors like fish. Some mermaids have fins on their upper body too.
Yes, their fins are regarded as delicacies in Thailand, and their bone marrow has been used in some Milk-Bone brand treats, but there was some controversy over maltreatment of the caught mermaids, and other issues like that. The meat from their tails are usually referred to as 'tilapia filets' at most super-markets or fish stores.
There are no actual mermaids...
think about that question do they swim? do they have fins? yes by the way they do
No. Mermaids are not real and there are no spells to make people into mermaids.
mermaids livge in the ocean there for mermaids are real
There are no mermaids anywhere, since mermaids do not actually exist.
Mermaids are not real