They'll eat any fish or other creature they can catch. They tend to hide in crevices and holes during the day, then hunt at night. The good news: If morays bite out of fear or by accident (especially when foraging for food), they will usually release their grip and let you go. They're fish, by the way, and they can be up to 8 feet long.Ī bite from their razor-sharp teeth and powerful, locking jaws will produce ragged wounds that are prone to infection from the bacteria inside the eels’ mouths, according to NOAA. These primitive creatures just look like death. Snakelike body, protruding snout and wide jaws. The slender fish can reach between 3 to 5 feet in length. The undulated moray sports a pattern of light undulating lines and speckles on a dark green background, with a snout that is often yellow. Honorable mention goes to the Portuguese man-of-war, a jellyfish with a sting said to be as painful as a lightning strike - though it's not clear how many people are actually able to make that comparison. locations are known to induce heart failure. Species of box jelly fish in Hawaii, Florida and other U.S. The sting of a Chironex fleckeri box jellyfish can kill a person in less than three minutes. One Australian box jellyfish can have dozens of tentacles, each up to 15 feet long, with enough toxin to kill 60 people. "But because death certificates are not required in many countries within the range of box jellyfish, worldwide fatalities from box jellyfish may be seriously underestimated," the NSF states. Some 20 to 40 people die from stings by box jellyfish annually in the Philippines alone, according to the U.S. While no official tallies exist, anecdotal evidence suggest dozens of people and perhaps more than 100 or more die each year from the many species of box jellyfish that exist in all oceans.
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