Marine and Freshwater Biology Archives

Narwhal tusks expose climate change

Like rings in a tree trunk, narwal tusks have growth rings that give us a window into changing conditions in the Arctic climate.

Phytoplankton blooms hold the key to setting sustainable and fair fishing quotas each year—a win-win situation for the economy and the ecosystem.

A dead zone in Lake Erie gives clues to how phosphorus levels change in the water and what this means for future environmental conditions.

Researchers from the University of Hawaii at Manoa show us what ocean life is like atop a deep sea mountain.

Taking “you are what you eat” to the next level, new research shows that the more a sea anemone eats, the more tentacles it grows.

The interaction between ocean and climate is changing and the exchange is intensifying. We’re seeing the consequences of this around the world.

Marine mammals such as dolphins, porpoises, and whales are often injured or killed by commercial fishing. New policies are needed…

Ancient squid had shells, but now they don’t. How did that happen and why? Find out in this video about squid shells, from PBS Eons.

Some years bring massive jellyfish blooms. What causes these blooms of jellyfish and why are they increasing?

Whale sharks, the largest fish in the ocean, have been getting caught in commercial tuna fishing nets. New regulations may protect them.