and broadnose sevengill sharks. Despite the different tooth structures, none were altered by ethanol, bleach, or hydrogen peroxide, the chemicals often used to clean shark jaws and whiten the teeth.

A new study based on two decades of data shows what happens in an ocean ecosystem without great white sharks. Great white ...

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and broadnose sevengill sharks. Despite the different tooth structures, none were altered by ethanol, bleach, or hydrogen peroxide, the chemicals often used to clean shark jaws and whiten the teeth.

This process uncovered the DNA of two animals: orcas, also known as killer whales, and broadnose sevengill sharks. Orca DNA was linked to the largest bite wound, found in the center of the shark ...

"The loss of this iconic apex predator has led to an increase in sightings of Cape fur seals and sevengill sharks, which in turn has coincided with a decline in the species that they rely on for ...

The absence of great white sharks has led to an increase in Cape fur seals (Arctocephalus pusillus) and sevengill sharks (Notorynchus cepedianus) and an associated decline in fish that the seals ...

"The loss of this iconic apex predator has led to an increase in sightings of Cape fur seals and sevengill sharks, which in turn has coincided with a decline in the species that they rely on for ...