Millions of mysterious ‘sea pickles’ swamp US west coast

Huge and unexplained bloom has fishers racing to save their nets, and scientists hurrying to study the rare animal

Fixing the role of nitrogen in coral bleaching

A unique investigation highlights how excess nitrogen can trigger coral bleaching in the absence of heat stress.

Big fish in big trouble in Europe

Many large fish species, including many of the sharks and rays of Europe, are threatened with extinction. Confirming the findings of previous studies, scientists highlight regional differences in fish stock status in Europe and point to overfishing in the Mediterranean.

Why the Sumatra earthquake was so severe

An international team of scientists has found evidence suggesting the dehydration of minerals deep below the ocean floor influenced the severity of the Sumatra earthquake, which took place on Dec. 26, 2004.

Regular coral larvae supply from neighboring reefs helps degraded reefs recover

For reefs facing huge challenges, more coral larvae doesn’t necessarily translate to increased rates of coral recovery on degraded reefs

SMOS brings Mediterranean salinity into focus

ESA’s SMOS mission maps variations in soil moisture and salt in the surface waters of the open oceans.

Bacteria living in marine sponge produce toxic compounds found in man-made products

Researchers have discovered for the first time that a common marine sponge hosts bacteria that specialize in the production of toxic compounds nearly identical to man-made fire retardants, a finding that could help scientists better understand the human health implications of these common additives.

An Introduction to My Life Aquatic

Earthzine science writer joins Robert Ballard’s Corps of Exploration on board the E/V Nautilus in August.

XPRIZE to Sponsor Earthzine Writing Fellowship

Applications are due May 1 for an Earthzine Writing Fellowship that will explore the ocean depths.

The genetic basis for timing of reproduction in the Atlantic herring revealed

Animals need to breed at the time of year when their progeny have the best chance of survival.

Taking a Trip? Consider Sustainable Sea Turtle Travel

Ecotourism provides opportunities to experience nature while supporting conservation.

Large Sections of Australia’s Great Reef Are Now Dead, Scientists Find

If most of the world’s coral reefs die, some of the richest and most colorful life in the ocean could be lost, along with huge sums from reef tourism.