Museum curator Miranda Lowe explains, 'They have eggs and sperm and these get released to be ... Image via Wikimedia Commons The hydrozoan Turritopsis dohrnii, an animal about 4.5 millimetres wide and ...

The ocean is home to some of the most fascinating creatures on Earth, but none are as astonishing as the Turritopsis dohrnii, commonly known as the immortal jellyfish. These tiny, alien-like ...