cartilaginous fish
Fish can actually drown?
This question sounds absurd. Fish live in water and can breathe in it, so how can they drown? To understand this, we fi...
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2026-01-12
The story of high-level fish wearing nomadic clothing and riding horses.
Life originated in the primordial ocean, and the earliest vertebrates also emerged in water. Armored fish and placoderm...
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2026-01-12
The structure of the slit-mouth shark (an ancient marine killer)
The sharks we are familiar with belong to the cartilaginous fish family. Cartilaginous fish are almost entirely marine ...
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2026-01-12
Fish are the oldest vertebrates
Fish are the oldest vertebrates. They inhabit almost all aquatic environments on Earth—from freshwater lakes and rivers...
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2026-01-12
