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Studies indicating that fish can feel pain were confusing nociception with feeling pain, says Rose. "Pain is predicated on awareness. The key issue is the distinction between nociception and pain. A person who is anaesthetised in an operating theatre will still respond physically to an external stimulus, but he or she will not feel pain."
A monarch butterfly (Danaus plexippus) caterpillar. Whether invertebrates can feel pain is a contentious issue. Although there are numerous definitions of pain, almost all involve two key components.
Irukandji syndrome is a condition that results from envenomation by certain box jellyfish. [4] In rare instances the sting may result in cardiac arrest and death. [5] The most common jellyfish involved is the Carukia barnesi, a species of Irukandji jellyfish. [4] Those stung may experience severe or even excruciating pain.
Their stings are "very potent and produce severe pain," according to the environmental department.The stings may even require emergency medical care in some cases. A Pacific jellyfish species ...
Most jellyfish found in South Carolina waters are harmless. Researchers estimate there could be up to 300,000 species of jellyfish - a staggering figure for an organism with no brain, heart or lungs.
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The effects of stings range from mild discomfort to extreme pain and death. [145] [146] Most jellyfish stings are not deadly, but stings of some box jellyfish (Irukandji jellyfish), such as the sea wasp, can be deadly. Stings may cause anaphylaxis (a form of shock), which can be fatal. Jellyfish kill 20 to 40 people a year in the Philippines alone.
Treatment for stingray stings, like jellyfish stings, includes immersing the affected area in hot water, says Ross, which you should do as soon as you are able. Unlike jellyfish stings, stingrays ...