With Pisces numbers all over the world falling thanks to overfishing and habitat death , a surprising predator has rebound up to take their position — the Portuguese man-of-war . Due to their low energy requirements , the floating blobs of stingers do n’t need to be quite as active or accurate to spread and fill the ecologic recession afforded them by change in the ecosystem .
Even more curiously , the jellyfish appear to beadapting to be better hunters , too . An active piranha fish has to spot fair game and chase after it , but the Medusozoa just passively wait for their prey to come into contact with their poison Stinger . So jellyfish are develop into larger and even slower incite organisms , capable to cover more domain with their tendril while still needing only small amounts of energy to survive .
Keep your middle on the beaches in the future . Sedate - seeming giant jellyfish may be the next megasharks .
icon : Moon Portuguese man-of-war , Gijón Aquarium . exposure by Julio Arrontes .
Courtesy of José Luis Acuña and Julio Arrontes , University of Ontario
BiologyEvolutionScienceZoology
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