Do Hammer Sharks Really Eat Seaweed?
Sharks are ferocious hunters in the ocean, and in our impression, whenever a shark appears in the sea, it will inevitably bring disaster to various small animals.
Do you know? In fact, some sharks 'eat vegetarian'! And these vegetarian sharks come from the famous hammerhead shark family!
How do vegetarian sharks do this? Did they really 'hang their swords' and become enlightened?
Let's first understand the hammerhead shark.
Hammerhead shark, belongs to the hammerhead shark family (Sphyrnidae), in this group there are many species including narrow-headed hammerhead shark, groove-less hammerhead shark, hammerhead shark etc.,
The hammerhead shark family includes 2 genera, a total of 9 species, they all have a common characteristic, that is, they have a strange structure on their heads like a large dart. This strange structure on their heads is very similar to the hairstyle of ancient Chinese noble ladies. 'Hammerhead shark' is named from this.
The hairstyles of ancient Chinese noble ladies, are they very similar to the hammerhead shark's head?
In English, they are called hammerhead shark (hammerhead shark), which is a very image name, but their heads can't be used to nail things.,
Hammerhead shark: My head is not combed, it's my mother who gave birth to me
Small shark has no father how can it?, it turns out that some studies have found that narrow-headed hammerhead sharks (yes, the one that eats seaweed) in aquariums are pregnant without contact with other male hammerhead sharks.,
This breeding method is calledsolitary cloning
solitary cloning refers to the solitary cloning of other cartilaginous animals such as Komodo dragon (Varanus komodoensis) and blackfin shark (Carcharhinus limbatus)
narrow-headed hammerhead shark: yes, it's my mother who gave birth to me
unfavorable survival situation
because of the demand for shark fin and combined fishing, a large number of hammerhead sharks are caught. Large species of hammerhead sharks like to travel in groups, when they track prey, they are also likely to be caught in a net together with the prey fish by fishing boats.,
Approximately 1.3 to 2.7 million hammerhead sharks and groove-less hammerhead sharks are killed for fins every yearruthless shark fin trade
According to the list published by CITES in November 2019, the wide-headed hammerhead shark (Sphyrna lewini), groove-less hammerhead shark (Sphyrna mokarran) and hammerhead shark (Sphyrna zygaena) are listed in Annex 2, which is equivalent to China's level 2 protected animal.
Sphyrna mokarran5
Sphyrna tiburo8.8%~62.1%
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Varanus komodoensisCarcharhinus limbatus
130270
201911Sphyrna lewiniSphyrna mokarranSphyrna zygaena2
