Dangerous marine animals
Main category: Animal, equipped with poisonous organs of defense and attack, or actively-poisonous
Additions to the main section:
Jellyfish-cyanea. It is a large animal, the diameter of the hemispherical dome can be up to 60 cm dome Color crimson, pinkish, or yellow. The dome is bordered with broad petals (blades). The tentacles are long, and lots of them. They are gathered into 8 groups, and hang, as a network (Fig. 29A). The length of the tentacles can be several meters or more. Jellyfish lanei live everywhere, including in the Northern seas of our country. For example, in the Barents sea.
Fig. 29. Jellyfish: cyanea; in – kornerot
Medusa-ductilometer. The dome is hemispherical. Its diameter to 25 cm. Has 24 long and 16 short tentacles. Painting of the dome of yellowish or yellowish-brown, and the tentacles red-brown color. This jellyfish lives in the upper layers of water in tropical and subtropical latitudes of the Pacific, Indian and Atlantic oceans.
A very dangerous encounter with a jellyfish-comerota (Fig. 29b).
Medusa-godinama, brestovica. The diameter of the hemispherical dome in this animal of 20-30 mm, the height of the dome 15 to 17 mm (Fig. 30A). When moving the dome can dramatically opasatsya. Color yellowish-brown. Prevalent in areas with small depths, common in temperate latitudes of Chicagoarea. Often forms large aggregations, which has been observed near the shores of our country along the coast of the sea of Japan.
A great similarity with the jellyfish-krestovskom has small harmless hydromedusa. It has a more spherical dome and little tentacles (Fig. 30B).
Fig. 30. Jellyfish: a – brestovica (gonionemus); – hydromedusa
In tropical reefs inhabited by small glowing jellyfish. The diameter of the dome up to 65 mm, and the length of tentacles up to 50 cm In the dark dome of the jellyfish water.
Sea wasp. This is a small jellyfish with a dome diameter up to 45 mm (Fig. 31). Often found in coastal waters of Australia. Death from burns may occur within a few minutes. Over the past 25 years in the waters surrounding Queensland (Australia), from contact with this jellyfish has killed about 60 people, while the victims of sharks in this region of the World ocean was at this time only 13 people. Very dangerous is the jellyfish chiropsalmus that live in the Indian ocean and in the waters of the Philippine Islands.
Fig. 31. Jellyfish-chironex (sea wasp)
In coastal areas of tropical and subtropical latitudes and sometimes see large clusters of small larvae of jellyfish, known locally as “stinging sea grass”, or “burning pine needles”. Once in this cluster, one can get severe burns if the body not protected by clothing.
Touching a poisonous jellyfish siphonophores and causes various lesions, accompanied by burning pain. If a strong burn to further develop weakness, intestinal disorders, cough, difficulty breathing, bronchial spasms, pain in muscles and joints. In severe cases, broken heart activity. The degree of poisoning depends on the size (area) of the burn, type of jellyfish, and possibly, the season and other factors.
When treatment is necessary to reduce pain, reduce spasmodic (convulsive) phenomena and to eliminate local damage (burns). It is recommended to enter analgesics (decrease pain), calcium gluconate (withdrawal spastic phenomena). For topical treatment apply lotions with diluted ammonia, ethanol, oil compresses. With the development of cardiac or respiratory functions need to apply symptomatic treatment. Along with drugs it is advisable to use heat (heating pads, hot tea, rubbing of hands and feet, etc.). In skin rash you must enter antihistamines.
Prevention is to avoid contact with poisonous jellyfish and siphonophores. In case of emergency underwater work in the areas of habitat these animals need to wear enough thick clothes (suits) and gloves. In the presence of large clusters of small jellyfish should protect the eyes. In case of a burn victim as soon as possible to get to shore or the vessel. Known cases when as a result of burns people fainted from the pain and drowned before they came to help.
The fishermen engaged in commercial fishing gear, contact with Medusan possible when the sample networks, the disassembly of the catch and processing of fish in industrial premises.
Gelatinous body of a jellyfish consisting almost entirely of water, easily destroyed, and therefore not always in the catch are preserved entire specimens, which can determine, dangerous or harmless this jellyfish. In this regard, caution will be used with any jellyfish caught on Board the vessel. The pieces searing the tentacles may stick to the network and the ropes, the sampling gear on Board the vessel and together with the spray of water to fall on your face and that is especially dangerous to the eyes. Therefore, when working in the habitats of poisonous jellyfish, you must use gloves (gloves) and safety goggles. You should remove (wash) the remains of jellyfish from the deck and rigging, as, vysohnuv, they are in the form of fine dust can get into eyes and cause dangerous inflammation.