Octopus Phylum Mollusca
The octopus phylum mollusca is a soft-bodied marine animal having eight, a bag shaped body, and is not covered with shell. The octopus phylum mollusca is often called “the devilfish” – as he suctions all this preys into the two rows of suction discs. He is a powerful predatory mollusk who also has an ink sac, which is his strategic defense against any foreseen danger in the water. After the anthropoids’, the mollusks where the octopus phylum mollusca belong is the second largest animal kingdom (50, 0000 to 100,000 species). Other species of the same phylum include among others mollusks such as sea shells, clams, oysters, squid, and snails. The octopus phylum mollusca only inhabit in oceans and seas while some other members of their family live in both land and seas.
Most mollusks are good in adjusting to their new environment including the octopus phylum mollusca. When they migrated to other places in the diverse seas they are high adaptable. The size of the biggest of the octopus phylum mollusca can be as much as 4000 lbs. The octopus phylum mollusca that are found in the Pacific Oceans have various sizes from a few centimetres to over 10 meters. Octopuses and squids comprise of more than 600 species in the same kingdom and these giant creatures can use their other co species as the small clams and snails as their prey. Some octopus phylum mollusca when caught by fishermen and are great edible food and that include the ink that they ejected.
The order of hierarchy of the octopus phylum mollusca is classified under Cephalopoda, with an order Octopoda, under the family Octopodidae, and under the genus Octopus.The octopus phylum mollusca can creep over hard surfaces using their arms and moves under water like a jet propulsion when it moves forward and takes its exit forcibly taking in water and ejecting the water through a funnel as their muscular mantle contracts. When they want to defend themselves from their enemies, the construct stone barricades or hide in the bed rocks at the sea bottom and they eject a cloud of dark ink for them not to be visible. The ink sprayed could have a paralyzing effect on the sensory organs of their enemies.
The octopus phylum mollusca is considered a carnivorous and lures their prey including the smaller species of crustaceans, clams and other bivalves by wiggling the tip of its arm like a worm and then strategically grabbing and sucking them with their tentacles. They can get crabs as food in an instant. The octopus phylum mollusca also reproduce sexually by mating a female partner. A male octopus usually approaches a female octopus by touching the female and caressing her with his arm. They seem to have some sort of foreplay. Mating begins when the male octopus inserts its arm under the mantle of the female, and the spermatophores travel down to the hectocotylus to the female's oviduct and the female will soon lay eggs of about 150,000 in two weeks. The eggs are guarded by the female octopus for 50 days and in about 3 mm size they float to the surfaces and in about a month they sink down the sea bottom and become normal octopuses.