Habitat of a Squid
Squids are never found on the surface of the water, for they live around one thousand feet below the surface of the sea. The major reason for it, is that the water there is cooler and the squids easily get privacy there as not many sea animals live quite so deep down. Talking about the squid habitat, and their ecosystem, squids are generally found in all the four oceans, though a larger number of them is found in the Pacific ocean. Some specific species are found in specific oceans only, like, Boston squid is mostly found from Massachusetts to Carolina and Nova Scotia to Venezuela. Some species of squids prefer warm tropical waters while others prefer cooler waters. This may be one of the reasons why the North Atlantic ocean is home to most major species of squids. Apart from the Atlantic Ocean, squids are also found in the Pacific waters of California, Hawaii and Southern Japan.
As the squids live deep down in the ocean, they are rarely visible and that is the reason why other locations where they are live have not yet been discovered. Squids do not generally migrate, but if the food gets scanty or if their habitat is destroyed, squids can move to other locations. Camouflaging is also a part of their habitat. Their skin color can be changed by nervous impulses. Some species of squids have photophores, i.e. illuminated organs which they use to attract their prey as well as to protect themselves from predators, as squids are the favorite food of many sea animals, like sperm whales, albatrosses and other fish. Squids are also eaten by humans in some parts of the world. The main diet is crustaceans like shrimp and other squids. This was all about the squid habitat, further are some interesting facts about squids.
Facts About Squids
- Giant squids are the largest invertebrates on Earth, weighing about 900 kg and measuring to about 60 feet long.
- All species of squids have three hearts.
- While moving in water, squids first use their tails and then their heads to move.
- The giant squid species have eyeballs of the size of basketballs! Their diameter is around 25 cm.
- Some species of squids live thirteen thousand feet deep in the sea!
- They do not have an external shell like other mollusks, but they do have an internal shell.
- Squids have an unusual way of swimming, they swim by sucking water in their mantle cavities and then immediately expel it out through a siphon (organ).
- To escape from predators, squids release sepia, which is a cloudy ink like substance.
- Some species of squids are said to be aggressive and if angry, can even attack sharks!
- The lifespan of squids is very short, 1 to 3 years on an average.
- It is said that an Australian aquarium paid more than one hundred thousand dollars for one block of ice, which contained the preserved body of a giant squid in it.