Trees first appeared on Earth during the Devonian period, around 385 million years ago, and dinosaurs about 100 million years later, between 250 to 200 million years ago. But you might be surprised to ...

Sharks may be the ocean's apex predator but how do they reproduce? We break down the fish's biology.

These top predators eat smaller animals, balancing the populations of fish and other marine life. For example, sharks protect ...

A tiny shark named Yoko is making waves—not just at the Shreveport Aquarium, where she was born, but in the scientific ...

Scientists and governments are calling for the strongest international protections yet for sharks and rays, citing ...

Researchers from the UAB have shown that sex hormones accumulate in the skin of sharks. This finding opens a new way for the ...

Sharks don’t exactly have the best reputation. Decades of fear-driven stories and films have made sure of that. But if you actually study them– what they do, how they survive– it becomes clear they’re ...

Microplastics are accumulating in sharks’ gonads and GI tracts, disrupting reproduction and threatening population recovery.

In some environments, freezing might actually be a bad idea. Small reef sharks and bottom-dwelling rays often squeeze through ...

Researchers of the UAB have shown that sex hormones accumulate in the skin of sharks. This finding opens a new way for the evaluation of their ...

Female sharks have begun reproducing without males through parthenogenesis by Guillermo Carvajal August 1, 2024 August 1, 2024. In a surprising development in marine biology, recurrent parthenogenesis ...

Oviparous: Sharks that reproduce in this way lay eggs, often called “mermaid purses.” The eggs eventually hatch live young. Types of oviparous sharks: Horn shark, small-spotted catshark, zebra ...