Cathy LucasUniversity of Southampton Latest articles by Cathy Lucas Do Not Fear the Sailor 'Jellyfish' Invasion By Cathy Lucas published 5 October 14 Opinion Opinion Sign up for the Live Science daily newsletter nowGet the world’s most fascinating discoveries delivered straight to your inbox.Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors LATEST ARTICLES1Southern cassowary: The giant prehistoric bird with dinosaur feet214,000-year-old ice age 'puppies' were actually wolf sisters that dined on woolly rhino for last meal3Does the color purple really exist?4Science news this week: Overdue earthquakes and star-shaped brain cells5Instead of 'de-extincting' dire wolves, scientists should use gene editing to protect living, endangered species