Among the myriad creatures that populate our ocean, some stand out as having an outsized impact on the marine environment—shaping and maintaining habitats that themselves sustain countless other forms ...

Time-lapse video shows how a mushroom coral polyp pulses and inflates, flinging its soft body into micro-hops to slowly move itself to a new location.

Adenomatous polyps typically do not cause symptoms unless they progress to colon cancer. Even then, there may be no sign of a problem until the malignancy is advanced. This is why colon cancer ...

Coral reefs are marine structures created by calcifying coral animals and their algal symbionts. Coral reef ecosystems are generally high in biodiversity, most often found in shallow tropical seas ...

Polyps in the gallbladder may not cause any symptoms. Depending on the type of polyps, they can be benign, be a sign of inflammation, or potentially lead to cancer. Polyps are abnormal tissue ...

Early-stage juvenile corals, known as primary polyps, lack symbiotic algae to help them meet their nutritional needs via photosynthesis and so rely on respiration for energy. Without enough oxygen ...

Florida Coral Rescue Center biologist Justin Zimmerman explains why coral reefs are important to Florida's economy and how they protect the coastline. Marine scientists tracked coral colonies in a ...

You might be used to seeing corals planted in one spot. That’s because most of them permanently attach themselves to an area on a reef and stay there indefinitely. But not all coral species want ...

Scientists have found that coral bleaching on Australia's Great Barrier Reef has reached "catastrophic" levels. More than 40% of corals monitored near an island in the southern reef were killed ...

When you imagine a coral, it's probably not walking around. In fact, by most accounts, corals are sessile, meaning they are fixed to the surface of their habitat, often the reef built from the bones ...

A species of free-living coral, Cycloseris cyclolites, defies traditional coral behavior by actively migrating toward light using a movement strategy reminiscent of jellyfish. A new study from ...

According to the study, coral bleaching is reaching “catastrophic” levels, with more than 50% of the corals monitored in the reef’s south killed last year during the most “severe and widespread ...