Basking sharks are known to host parasites, including common remoras and sea lampreys. The presence of fresh wounds on basking sharks that match the shape and size of a lamprey’s mouth suggests that ...

Dolphins and sharks both have a torpedo-like shape, so are they the closest relatives? Because the lamprey also has this shape, we know this body plan is a primitive trait and we have to ignore it.

Sea lamprey abundance exceeded targets in 2024 in all Great Lakes due to treatment restrictions during the COVID-19 pandemic. However numbers of the parasitic fish are expected to decline.

The Great Lakes where sea lamprey control efforts were most cut during COVID-19 had the biggest surge of the invasive species, a study found.

"The cell clusters we observed are likely lamprey-specific features, as they are not recognizable in the head mesoderm of both hagfish and shark embryos," explains Dr. Onai.

Before the dams, lamprey biologists estimate returns numbered in the millions. In the past 25 years, returns have ranged from 6,200 to 63,000, counted in the day at Bonneville Dam.

A breaching white shark surprises researchers off Cape Cod, Massachusetts. Why it matters. It takes a lot of energy for a shark or ray to leap out of the water – especially a massive creature ...