In reality, not because mermaids don't exist. Aside from that it depends on the work of fiction they are depicted in as to whether they can breather underwater.
Ariel is not a fish, she is a mermaid and mermaids just have fish tails, no gills.
Fish don't have noses, they have gills which make them breathe.
They have gillsmermaids have gills beneath their arm pits and therefore water flows in through their mouth and out through the gills allowing easy breathing like a fish.
They have a tattoo on you head and very tall and they were boots and have like gills next to their noses to breath
It's called "makeup". Claire Holt is an actress who portrayed a mermaid in a TV show. She is not really a mermaid, because mermaids do not really exist; she does not have gills, they were added for the show by a makeup/special effects team.
Mermaids don't really exist. Mermaid lifestyle depends on what fiction universe they are depicted in and what the author wants.
No. For them to breathe, they have gills. Gills filter oxygen in the water for them to breathe.
There are no actual mermaids...
mermaids livge in the ocean there for mermaids are real
No. Mermaids are not real and there are no spells to make people into mermaids.
Yes, infact, she can. I think it's because she grows gills, but it might be that mermaids can hold their breath longer than any animal! Mermaids (or mermen, or merchildre, etc.) are half-fish, half-human, so it could be either of them, although Emily's friend mentions gills a few times, so I think she has gills. If you'll notice, the first time she leaves Rainbow Rocks with Shone she is surprised that she swam that far with only one breath. Shona explains, saying simply, "We're mermaids." So, the simple answer to your question is 'Yes'.
There are no mermaids anywhere, since mermaids do not actually exist.