One starfish species doesn't seem to want to grow up. Scientists have discovered a disc-shaped animal in the deep Pacific Ocean whose body plan is stuck in the juvenile phase of the life cycle. The ...

Watch a sea anemone defend itself against a predatory starfish in this video. The sea anemone detects the starfish nearby, ...

"This comeback has been incredible to witness in real life." Researchers thrilled after witnessing hard-to-believe animal 'baby boom': 'An 8,000% increase' first appeared on The Cool Down.

NEWPORT, Ore. – In an old industrial warehouse, Tiffany Rudek leaned into a chest-high tank. Using a laminated card, she gently pried a red-speckled sea star from the enclosure’s bright blue walls.

Learn why some starfish develop a rare square shape through genetics, regeneration errors, and abnormal development.

Just five years after a wasting disease swept California starfish populations, killing many of the creatures, scientists have discovered a microevolution in one species of sea star that helped it ...

The mysterious sea star wasting disease has caused massive declines of the sunflower sea star (Pycnopodia helianthoides), a major predator within kelp forests in the Northeast Pacific. The widespread ...

Researchers have revealed the evolutionary history of the crown-of-thorns starfish -- a predator of coral that can devastate coral reefs. Their findings shed light on how the populations of these ...

It all started with a group of schoolkids in Arkansas who wanted to help dying starfish. In 2013, sea star wasting disease caused a massive die-off of multiple starfish species up and down the Pacific ...

Some starfish stand out more than others. This became apparent when fisherman Lee LeFever caught an ultra-rare sunflower sea star during a recent crab fishing excursion, according to a report from ...

May 18 (UPI) --Genetic analysis of fish feces suggests crown-of-thorns starfish are a surprisingly popular menu item. According to the findings, published Monday in the journal Scientific Reports, ...