Moon jellyfish

Ali Pashang publish photo

Jellyfish are ancient creatures. Fossils have been found in rocks that are 650 million years old. Today there are more than 2000 species. Jellyfish are 95% water, 3% protein, and 1% mineral. There are four life stages from birth to adult. There is no backbone, brain, or heart. Adults drift with the currents, but can swim horizontally by pulsations ...