You will be surprised, but what you see is an egg. And even more surprise when you learn that the egg is a shark!
You may be indignant: “But how? From school they told us that sharks are viviparous. Indeed, most sharks are either viviparous or ovoviviparous.
And only 30% of these waterfowl predators turned into layers.
These eggs can be different. And spiral, and in the form of an anchor, and with all kinds of processes - in short, the fantasy of sharks in this matter is truly limitless. They didn’t put their kids in such strange capsules because of their design quirks. All sharks have one thing in common - defenselessness.
Shark eggs develop for a long time - 5-7 months. And all this time, like caviar, they are an easy snack for predators of all stripes. But sharks are threatened not only by marine life, but also by the sea itself. Currents and waves can easily bring an egg to the shore. Therefore, each of the designs serves its own purpose.
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For example, a coiled horned shark egg, covered with a cornea, perfectly protects the fetus from meat eaters. This shape allows the capsule to burst into the sand and anchor in it as an anchor. That only nature does not come up with in order to protect their children.
And the numerous threads on the cat shark egg help the fetus to gain a foothold in the ground so that it is not carried away to the shore. And some, for example, polar sharks, take snag. They give birth to 500 eggs at once, of which only 10 are fertilized.
A whale shark egg reaches 70 cm in length and 40 in width. An egg of this size cannot be eaten with all the desire.