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 ...

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

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

Did you know that sharks can reproduce asexually? It's true -- female sharks can produce offspring without a contribution from a male shark. This is called parthenogenesis, and has been observed ...

In sharks, asexual reproduction usually happens via a process called "automictic parthenogenesis," explained Feldheim. During egg development, one egg is produced along with three other products ...

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

Sharks have been known to reproduce either sexually or asexually, but it’s usually one or the other. Now researchers have observed a zebra shark switching from sexual to asexual reproduction for ...

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 ...

DUBLIN, Ireland — Some female sharks can fertilize their own eggs and give birth without sperm from males, according to a new study of the asexual reproduction of a hammerhead in a U.S. zoo.

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, ...