Mild winter weather creates ideal conditions for these jelly-like creatures that travel by wind and wash ashore in spring.

The white coloured blobs on the uncoated block are a mixture of fat, oil and grease (FOG). Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!

People across Europe spotted a mysterious blue blob floating in the night sky on Monday. Videos posted on social media showed the spiral shining bright above the United Kingdom, Croatia and Poland.