Seawater is partly poisonous! Please be careful when raising! Today we will briefly list some common poisonous creatures in seawater organisms!
One: Blue-ringed octopus

The toxins secreted by blue-ringed octopuses contain tetrodotoxin, a serotonin, hyaluronidase, amine-p-ethylphenol, histamine, tryptophan acid, hydroxyphenylethanolamine, taurine, acetylcholine, and dopamine. The main neurotoxin was previously thought to be a substance called maculotoxin, but it is now confirmed to be tetrodotoxin; this toxin can also be found in puffer fish and snails. Tetrodotoxin has a slightly paralyzing effect on the central nervous system and nerve ends, blocking the sodium channels of the muscles, paralyzing the muscles, and causing respiratory arrest or cardiac arrest. Tetrodotoxin is 10,000 times more toxic than sodium cyanide, and 0.5 mg can cause poisoning and death. Tetrodotoxin is toxic and cannot be destroyed by heating or salting. The toxin of the blue-ringed octopus is present in its salivary glands, however, its toxin is not secreted by itself, but by virions present in the salivary glands. Virions cannot survive independently in nature, they parasitize the salivary glands of octopuses, and when octopuses attack other organisms, virions enter the organism and exert its toxic effects.
2. Flame squid
Toxicological studies have shown that the muscle tissue of the flame squid is highly toxic; it is the only poisonous squid animal, and one of only three poisonous cephalopods, and its bright and vivid body color is a warning color. According to marine biologist Marco Norman at victorian museum in Queensland, Australia, the flame squid is as toxic as its distant cousin of cephalopods, the blue-ringed octopus.
Third, chicken heart snail
Cone Snail, also known as "Taro Snail", mainly grows in tropical seas, generally living in warm seas, belongs to the mollusk phylum, gastropods, Taro snail family, is a beautiful snail living on coastal coral reefs and beaches. The shell of the chicken heart snail is sharp at the front and the rear end is thick, shaped like the heart or taro of a chicken. It has many varieties, in different colors and patterns, and is a highly poisonous marine creature, because its tip part hides a small opening with poisonous teeth that can shoot venom from here, enough to make the injured person scream for life.
Fourth, button coral
The button coral group is a class of hexamorphs (Zoanthid) that are relatives of corals and sea anemones that attach to rocks or reefs in shallow seas. Some varieties of button corals secrete a highly toxic substance, anemone toxin (hydra toxin). Hydra toxin is strong, poisonous parts of the stinging, after poisoning will be red and swollen, itchy, blisters, severe wounds are easy to ulcerate and inflame, bitten with ice pressed on the wound, ice compresses.
5. Lionfish
It mostly inhabits rocky or coral reefs near the coast of temperate zones, but also lives in bridge piles, shipwrecks, and aquatic grass. He has a solitary personality and likes to live alone. Feeds on crustaceans, invertebrates and small fish. The roots of lionfish fins and the flaps around their mouths contain venom glands that can stun or even poison other small fish. Usually it likes to live in the reef discs and stone crevices on the seabed, if humans accidentally pierce the skin by it, although it will not be poisoned, the wound will be painful, swollen and inflamed.
Sixth, blue dot stingray
Taeniura lymma, also known as blue-spotted pearl stingray, is a species of marine fish that lives near the bottom in tropical or subtropical regions. Found in the Red Sea, east africa to the southern Sea of Japan, south to northern Australia, the blue-spotted stingray is a distinctive, colorful reef area that is abundant in sand, and is a very famous display fish in aquariums and ornamental fisheries. The poison of the blue-spotted stingray is concentrated on the tail thorn, and if it is not a joke, it will be life-threatening.