Australian box jellyfish have 60 flat-looking tentacles that are packed with stinging cells. These cells contain tiny harpoons attached to bulbs filled with lethal poison.

It’s out-of-the-box scary. The Tripedaliidae jellyfish species has welcomed its fourth family member — a new 24-eyed creature that measures just over a half-inch long and carries a remarkably ...

Scary, Squishy, Brainless, Beautiful: Inside the World of Jellyfish. They aren’t actually fish. They can make copies of themselves. And some older ones can become young again.

This one's a beautiful and fragile marine creature. Quinton White. Tue, July 4, 2023 at 9:02 AM UTC. ... Jellyfish and more: Warmer water is bringing sea creatures closer to the Beaches shore.

Jellyfish could be much smarter than scientists previously thought, asserts a new study published in the journal Current Biology. Here's what researchers discovered about the workings of their brains.

Box jellyfish, so-named for their cuboid body shape, are extremely venomous, with tentacles up to 10 feet long studded with tiny poisonous darts called nematocysts.

A tentacled summer visitor has arrived on the shores of the western Gulf. It looks like a jellyfish, but it's not. Look at the beautiful blue creatures — but don't touch, say state officials.

Stunning compass jellyfish are turning up on the Welsh coast amid warmer summer weather. Many have been spotted, with striking orange and brown markings, on a Pembrokeshire beach at the weekend ...