A combination of strong currents, severe winds and the weak propulsion system of the jellyfish makes these creatures susceptible to washing ashore. According to ReefEd, a service of the Great Barrier Reef Marine Park Authority, jellyfish have only a weak internal pumping mechanism that allows them to float, but they cannot steer away from danger. When jellyfish are caught in a strong current, they have no means of escape.Know More
Strong weather systems like hurricanes and regular events like the full moon both affect jellyfish. The pull of the full moon exacerbates strong currents, making jellyfish more likely to wash ashore. A small number of jellyfish are pushed ashore by the regular changing of the tides, but deposits of hundreds of jellyfish are the result of unusual tidal activity.
However, washing ashore is part of the natural life cycle of jellyfish, says Matt Babineau of the North Carolina Aquarium at Fort Fisher. Jellyfish are 98 percent water. When they wash up on shore, jellyfish quickly dry out and die. However, Babineau advises against picking up jellyfish or throwing them back into the ocean. Some jellyfish are harmless, but others have powerful, painful deadly stings. Additionally, the jellyfish cannot fight against the tidal conditions that washed them ashore, so any jellyfish thrown back into the ocean are likely to wash ashore again.Learn more about Jellyfish
Jellyfish are free-swimming marine animals composed of more than 95 percent water, with bodies consisting of an umbrella-shaped bell and trailing tentacles. Jellyfish are radially symmetrical with a central axis through the length of their bodies. As a result, they have a top and bottom, but no left or right sides, as do most animals whose bodies are bilaterally symmetrical.Full Answer >
Jellyfish that glow do so in order to attract prey and as a form of defense against predators. Jellyfish are able to do so due to phosphorescence, luminescence or bioluminescence.Full Answer >
Jellyfish are carnivores and excellent predators. They sting with tentacles to subdue small aquatic fish, and eat the eggs and invertebrates that stick to their tentacles.Full Answer >
Most jellyfish are translucent, often umbrella shaped organisms which come in a variety colors and sizes - some larger than a human and some as small as a pinhead. Though the majority of jellyfish are harmless to humans, there are a few species, such as the Portuguese man-of-war, that can cause severe injury and even death.Full Answer >