I entered your question into Google: Why do
mantas jump out of the water at night and belly
flop back into the water?
There's a video link that says:
Here's a link about manta rays, which are
larger than mobula rays:
My other answer is the same as the answer I
gave a little boy who asked, "Why are snakes so
long?" I asked him, "Why do you have 5
fingers?" , and we wondered about that for a
while. [We don't know exactly why snakes are so
long or why we have 5 fingers.] But here's a
better answer: "Snakes are so long, because the
long snakes survived better and had more
So I'll tell you, "Manta rays belly flop
because the manta rays that belly flopped survived
better and had more offspring than the manta rays
that didn't belly flop."
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