Octopus by Yena Yoo
Octopi are a group of cephalopods. 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 lb (10 kg), although averages are much smaller. They prey on crayfish, and mollusks, and will sometimes use their ink to disorient their victims before attacking. They are also known for their intelligence. 
Order: Octopoda 
Physiological Differences compared to human
- Octopi have a closed respiratory system. They do not have lungs.
- Four main methods for respiration.
- Octopi use a pair of well developed gills along with well developed blood vessels.
- They use a mantle. An octopus's mantle is a muscular structure that contains all of its organs, including gills, hearts, a digestive system and reproductive glads. It is located behind its head and across from its arms. It is The mantle's strong muscle assist with respiration and help protect sensitive organs.
- Octopi also respire through their epidermis, the outer layer of skin.
- Lastly With the siphon, they pump water through the gill system to enable them to breathe. (Note, The siphon is also used for movement as the octopus pumps his/her way through the water rather than swimming. ) [5,6]
Basic Anatomy 
Heat tolerance, behavioural temperature selection and temperature-dependent respiration in larval Octopus huttoni
- Findings : O. huttoni para-larvae (A kind of octopus) avoided seawater temperatures that resulted in deleterious effects in heat exposure experiments (∼23 °C) and it also resulted in decreased respiration rate.
- Connections to physiology research : Relating environmental parameters to organism's body temperature and physiological stress has becoming an important research goal
- Significance : Increasing ocean temperature will result in maldistribution of ocean organisms.
- Ability to convey something beyond : Based on this data, more researches should be stimulated and effort to prevent global warming should continue. 
Video : True Facts About The Octopus
: This following video will not only tell you true facts about octopus but also make you laugh! Don't miss it!
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