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.

This also holds true for how sharks reproduce. Do sharks lay eggs? Yes, and no. It depends on the species. Some sharks give birth by laying eggs, while others give birth to live young, Save Our ...

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 evaluation of their reproductive status by the biopsy of a sample that can ...

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

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 ...

Each species of shark is unique and has its own way of living. For instance, some sharks reproduce in different ways than others, and not all sharks have the same teeth, ...

The two sharks were seen birthing young in 2020, 2021 and 2023, with no males present for 13 years. The researchers weren't initially sure if this was parthenogenesis, as these sharks can store ...

Captive female sharks at an aquarium in Italy keep reproducing on their own with no males involved, indicating that it could be a vital survival mechanism, according to a new study.

Sharks have been made villains in most stories, whether it’s fact or fiction. But as the planet’s climate and oceans rapidly change, these boneless, aquatic, apex predators are also ...

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 ...