Ocean temperatures have hit record highs off the Florida Keys. Scientists and volunteer divers are racing to save these valuable creatures.

Widespread coral bleaching is underway as ocean temperatures hit record highs off the Florida Keys. Scientists and volunteer divers are racing to save these valuable creatures.

Trumpetfish are the first known predator to hide behind another animal when hunting.

Water temperatures in the 90s off Florida in July are alarming, a NOAA coral scientist writes. Scientists in several North American countries have already spotted coral bleaching off their coasts.

Marine biologists have discovered the remnants of ancient RNA viruses embedded in the DNA of symbiotic organisms living inside reef-building corals.

One of the most damaging invasive species in the oceans has breached a major barrier – the Amazon-Orinoco river plume – and is spreading along Brazil’s coast. Scientists are trying to catch up.

One meadow made enough sand to create a new island in 18 years.

One meadow made enough sand to create a new island in 18 years.

Evidence in Earth’s natural archives, from tree rings to seafloor sediments, points to one trend. Some climate models suggest another. Here’s why are important.

Climate change is making oceans more acidic globally. Now, scientists are finding that large storms can send pulses of acidic water into bays and estuaries, further stressing fish and shellfish.