Did you know that sperm can move like snakes?
as a result, they found an interesting phenomenon that the sperm used to move in two different ways: one is three-dimensional movement, in which the sperm swims in a spiral, and the other, it is the motion in a two-dimensional plane, which looks like a snake "taxiing".
the serpentine movement of sperm is like this:
and the comparison of the two modes of movement is as follows:
(the painting style on the left is a little happy …... )
Why are there two different ways of swimming? According to the researchers, this may be to adapt to the complex environment in the female reproductive tract. Their calculations show that a snake-like two-dimensional movement should be more suitable for moving through thicker, thicker mucus.
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observing the way sperm swim can help us better understand their function and fertilization process, which is also very helpful to reproductive medicine. And I feel that these "little tadpoles" look cute when they swim.
Nosrati, R. et al. Two-dimensional slither swimming of sperm within a micrometre of a surface. Nat. Commun. 6RV 8703 doi: 10.1038/ncomms9703 (2015).
speaking of sperm, have you ever seen sperm that can cuddle? If you read the original text, you can enjoy the sperm huddled together and the story behind it.