Mercury is present in seawater in small quantities. It gets into the marine food chain starting at the very bottom, absorbed by microscopic algae. Larger, carnivorous species like sharks and ...

The role of whales in ocean ... marine ecosystems on Earth. The colder waters nurture massive blooms of phytoplankton, ...

Zooplankton are one of the most diverse and abundant groups of organisms on Earth and they play an essential role in the marine food chain ... can sink into the deep ocean, thus transporting ...

Phytoplankton form the foundation of the marine food chain, and climate change is shaking ... An image from PACE’s Ocean Color Instrument showing a type of phytoplankton called Synechococcus ...

A frightening phenomenon that's making seawater more acidic, spelling disaster for many marine animals, from plankton and coral up the food chain to sea stars ... Sign our petition to help protect ...

If they die, there’ll be fewer big fish—and that could rattle the food chain. marine-plastic-ocean-fish-microplasticThe naturally oily surface slicks in which many ocean fish come of age are ...

Sea Otters: Effects of ocean acidification will be felt up the food chain. Marine mammals like sea otters that rely on shellfish may be in trouble. Studies show that, if left unchecked, within our ...

Once the plastic is in the ocean, it decomposes very slowly, breaking into tiny pieces known as microplastics, which can enter the marine food chain and become incredibly damaging to sea life. The ...

But how has fishing changed and does this affect the food chain? The decrease of ocean life is being caused by overfishing. This means that we are taking too many fish, lobsters and other marine ...