That a lot of sea critters change sex during their lifetimes. Males become females, females become males: transgender life histories are the norm for many different types of animals.
Some thins I’ve read over the past couple of days:
1) The Atlantic is slightly saltier that the Pacific, due to the direction of the prevailing winds (Westerly), and where the mountains are, which determines where all the rain (no salt) falls.
2) The rate of movement of water in the global circulation of the oceans is eight times as large as the flow out of the Amazon River, and is about the same as the amount of rain falling in the whole world.
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