Basking sharks are now one of the most highly protected sharks in European waters. A parasitic fish called a lamprey sometimes attaches itself near a male shark’s claspers, or reproductive organs.

shaking up top five of AP rankings Record breaking great white shark gets a tag for research near Florida-Georgia border ‘It’s almost science fiction’: Scientists say the shape of Earth’s ...

Now let's compare traits on the lamprey-dolphin-shark-wolf branch. Dolphins and sharks both have a torpedo-like shape, so are they the closest relatives? Because the lamprey also has this shape ...