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These transparent creatures are wonderful, but they cause destructive harms which cost millions of dollars. Let us read………………
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The infamous box jellyfish developed its frighteningly powerful venom to instantly stun or kill prey, like fish and shrimp, so their struggle to escape wouldn’t damage its delicate tentacles. Their venom is considered to be among the most deadly in the world, containing toxins that attack the heart, nervous system, and skin cells. It is so overpoweringly painful, human victims have been known to go into shock and drown or die of heart failure before even reaching shore. Survivors can experience considerable pain for weeks and often have significant scarring where the tentacles made contact.
The box jellyfish's venom is among the most deadly in the world, containing toxins that attack the heart, nervous system, and skin cells (source: National Geographic)
Box jellies are pale blue and transparent in color and get their name from the cube-like shape of their bell. Up to 15 tentacles grow from each corner of the bell and can reach 10 feet (3 meters) in length. Each tentacle has about 5,000 stinging cells, which are triggered not by touch but by the presence of a chemical on the outer layer of its prey.
Box jellies have eyes grouped in clusters of six on the four sides of their bell. Each cluster includes a pair of eyes with a sophisticated lens, retina, iris and cornea, although without a central nervous system, scientists aren’t sure how they process what they see. Glory to Allah!!!!!
Latest statistics state the following figures about box jellyfish:
1. Three minutes after a person is stung by a deadly box jellyfish, s/he may be dead.
2. Eight years after fast-reproducing comb jellies invaded in the Black Sea, they dominated it.
3. 20 to 40 people are killed annually from box jellyfish stings in the Philippines alone.
4. Four hundred vast Dead Zones in world oceans are too polluted for almost all life except jellyfish.
5. Forty five thousand eggs may be released daily by a single jellyfish.
6. Five hundred thousand people are stung by jellyfish in the Chesapeake Bay (which is the largest estuary in the United States) annually.
A photo for two nice creatures right is jellyfish and left is an octopus
Another wonderful creature is the common octopus which is unique for its appearance alone, with its massive bulbous head, large eyes, and eight distinctive arms. But by far the most striking characteristic of the octopus is the wide array of techniques it uses to avoid or thwart attackers.
Its first and most amazing line of defense is its ability to hide in plain sight. Using a network of pigment cells and specialized muscles in its skin, the common octopus can almost instantaneously match the colors, patterns, and even textures of its surroundings. Predators such as sharks, eels, and dolphins swim by without even noticing it.
When discovered, an octopus will release a cloud of black ink to obscure its attacker's view, giving it time to swim away. The ink even contains a substance that dulls a predator's sense of smell, making the fleeing octopus harder to track.
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The common octopus can change its appearance to hide from predators and prey (source: National Geographic)
If all else fails, an octopus can lose an arm to escape a predator's grasp and regrow it later with no permanent damage. They also have beaklike jaws that can deliver a nasty bite, and venomous saliva, used mainly for subduing prey.
Considered the most intelligent of all invertebrates, the common octopus is found in the tropical and temperate waters of the world’s oceans. They can grow to about 4.3 feet (1.3 meters) in length and weigh up to 22 pounds (10 kilograms), although averages are much smaller. They prey on crabs, crayfish, and mollusks, and will sometimes use their ink to disorient their victims before attacking.
Glory to Allah!!!! Who gave these creatures these techniques? Who gave them these defense and attacking abilities , nature or the creator of the nature who says about Himself on the tongue of prophet Moses : ([Musa (Moses)] said: "Our Lord is He Who gave to each thing its form and nature, then guided it aright){ Sûrat Tâ-Hâ-verse50}.
These weak creatures are threatening human and many maritime creatures, so that Allah Almighty says in the holy verse: (And none can know the hosts of your Lord but He. And this is nothing else than a (warning) reminder to mankind){Sûrat Al-Muddaththir - The One Enveloped –verse31 }.
Allah Almighty supported these creatures by all needed techniques to get its feed, He Almighty says about that: (And no (moving) living creature is there on earth but its provision is due from Allah. And He knows its dwelling place and its deposit (in the uterous, grave, etc.). All is in a Clear Book (Al-Lauh Al-Mahfuz - the Book of Decrees with Allah).){ Sûrat Hûd-Prophet Hûd –verse6}.
Finally, He Almighty says about disbelievers and atheists: (We will show them Our Signs in the universe, and in their ownselves, until it becomes manifest to them that this (the Qur'an) is the truth. Is it not sufficient in regard to your Lord that He is a Witness over all things?){ Sûrat Fussilat - They are Explained in detail -verse53}.
Thanks Allah for the blessing of Islam
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By: Abduldaem Al-Kaheel
References:
• http://animals.nationalgeographic.com/animals/invertebrates/box-jellyfish.html
• http://www.nsf.gov/news/special_reports/jellyfish/textonly/index.jsp
• http://www.phenomenica.com/2009/11/jellyfish-swarm-northward-in-warming.html
• http://animals.nationalgeographic.com/animals/invertebrates/common-octopus.html
