jellyfish tagged posts

Jellyfish robots to watch over endangered coral reefs

The robotic jellyfish propel themselves with rubber tentacles

A fleet of robotic jellyfish has been designed to monitor delicate ecosystems, including coral reefs. The underwater drones were invented by engineers at Florida Atlantic University and are driven by rings of hydraulic tentacles. The robots can squeeze through tight holes without causing damage.

One expert praised the design but warned that the man-made jellyfish might be eaten by turtles.

The flexible, 20cm-wide bots are modelled on the appearance of the moon jellyfish during its larval stage.

The design is intended to be less environmentally disruptive than a drone submarine, according to Prof Erik Engeberg, of Florida Atlantic University.

“Mini-submarines are rigid and typically use a propeller for locomotion,” he said...

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Blue jellyfish found in Newquay rock pool

Blue jellyfish

A jellyfish usually found in colder waters has been discovered stranded near Newquay, Cornwall. The unusual blue jellyfish was spotted by a group from the Manor House Activity Centre in St Issey. The jellyfish, found at Trevone Bay, has been given to the Blue Reef Aquarium in Newquay.

“We’ve seen several washing up over recent weeks but this is the first live specimen we’ve come across,” Lee Charnock from the aquarium said.

“Full-grown specimens can reach up to 15 centimetres in diameter and have metre-long stinging tentacles which they use to catch their prey.”

There are more than 200 known species of jellyfish. The blue jellyfish is usually found in the western Pacific around Japan and off the west coast of Scotland.

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