Myths vs Facts
By iastoppers.in
SHARKS
on
Sharks belong to a category of fish called “elasmobranchs”, known for their cartilaginous skeletons, where deposition of calcium occurs.
They have tough Skeletons-
Fact
:
Sharks possess superior night vision, aided by a reflective layer of tissue at the back of their eyeballs called the tapetum
Sharks close eyes when attacking-
Fact:
Ampullae of Lorenzini are small black spots near their nose, eyes, and mouth that sense electromagnetic fields and temperature shifts
Sharks have Electroreceptors-
Its true:
It is covered in tiny teeth-like structures called placoid scales, which reduce friction when swimming, often like sandpaper
Sharks have smooth skin-
Fact:
Sharks can be aged by counting rings on their vertebrae, akin to counting tree rings, though accuracy varies by species and size
Their age is based on color-
Fact:
Sharks exhibit incredible diversity in size (massive whale shark to tiny dwarf lantern), shape, habitat, diet, and behavior
All sharks are the same
-
Fact:
Sharks and rays possess some of the largest brains among all fish, with complex social behaviors
Sharks have walnut-sized brains
-
Fact:
While most sharks need to swim to breathe, some can pump water over their gills while resting
All sharks must swim constantly
-
Fact:
Some shark species can reproduce via parthenogenesis, and intrauterine cannibalism occurs in certain species
They reproduce like mammals
-
Fact:
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