“The impacts of jellyfish to the ecosystem are numerous, and not necessarily all negative:
- “The jellyfish compete directly and quite efficiently with larval and young finfish over planktonic food, and in some cases the jellies have caused these fish populations to ‘starve’.
- “Jellyfish are predators and massive swarms/blooms with large predation pressure can cause ecosystems to become unbalanced.
- “Jellyfish blooms means massive biomass in the water column and when that material sinks and decomposes on the seafloor, it can either cause formation of hypoxic and anoxic sediments (dead zones) or a feast to bottom dwellers (benthos) that enjoy the food (like manna in the sea)
- “Jellyfish blooms can cause mechanical clogging of coastal power plants that use seawater to cool their turbines, problems to desalination plants that use seawater to generate freshwater, problems to fisher-folk that want to target finfish or other marine species, all marine recreation, and aquaculture farms that grow fish in cages.”
“We cannot avoid swarms, as these are natural phenomena, but we must do more research to understand the dynamics of the swarms better in order to eventually be able to predict these.