The most primitive set detects only light levels, but one set of eyes is more sophisticated and can detect the color and size of objects. ... Whilethe jellyfish could avoid objects of different colors and shapes, transparent objects proved more difficult. “They can't respond to the see-th...
Increased nutrient in the water, ascribed to agricultural runoff, has also been cited as an antecedent to the recent proliferation of jellyfish numbers: scientist Monty Graham says, "ecosystems in which there are high levels of nutrient ... provide nourishment for the small organisms on which jel...
because the jellyfish stingers are so weak they won't harm humans. The lakes are located in the Republic of Palau, an island nation 550 miles east of the Philippines. Palau's first marine lake formed just 12,000 to 15,000 years ago after the last ice age ended and sea levels rose. ...
Another popular Jelly fish is the Upside Down Jelly fish, Cassiopea, which comes from the western Pacific Ocean around the Philippines and has been introduced to Hawaii (probably by ships around World War II). Cassiopea grows to about 8 inches / 20 cm in diameter. They are interesting because...
The gravitational(重力引起的) pull of the Moon drives the tides. Winds can also influence how high the tides come in. Then there are the climate patterns like El Nino (现象), which lead to higher-than-normal sea levels along both the U.S. East and West coasts.And, of course, the ...
Environmental factors, including water temperature, availability of food and pollution levels, significantly impact jellyfish lifespans. Predation by sea turtles and other marine animals also plays a critical role in determining how long jellyfish live. 3 Major Jellyfish Mortality Factors Jellyfish mor...
the upper water layers, either directly by migrating to the surface at night to feed on phytoplankton and grazers, or indirectly from sinking particles and predation on lower trophic levels4,26. In doing so, they redirect carbon to greater depths via the release of organic matter (e.g. ...
In response these events, fish farmers are developing mitigating strategies, such as situating cages out of tidal eddies, watch keeping (early warning) system, deploying mesh or bubble screens, and increasing oxygen levels by aeration (Rodger et al., 2011). 4.17.13.5 Energy Supply From Power ...
The study surveyed 1,445 people on their attitude toward the idea of consuming jellyfish, taking into consideration traits such as age, behavioral habits, and mouthfeel, and showed that young, well-traveled people with higher education levels and sensitivity to the environment are the ones more ...
Sponges and cnidarians are invertebrates, animals lacking a backbone, that are found in the ocean. Discover marine invertebrates and their environments, and learn about the characteristics of sponges and cnidarians. Related to this Question Why are jellyfish not affected by ocean acidification?