Predator 2 Environment Mantle The mantle is where the water and oxygen enter the body. Squid's respiration process is similar to the octopus'.

Giant squid require a very efficient gas exchange, this is accomplished through an number of adaptations.

They do this by putting the blood next to the water using a thin wall. Its respiratory system is actually very complex because it has three parts to it which are the gills, siphon, and the mantle. As mentioned before the respiratory pigment haemocyanin allows for oxygen to be carried in the blood, there is also capillary circulation in the gills which allows for more gas to be exchanged due to the higher surface area. The mantle serves as a tunnel where water can enter the squid's body. The ctenidium is found on either side of the siphon. Giant Squid:Respiratory System Predator The Giant Squid's quick ability to filter oxygen into the blood stream allows it to become a threat in the waters. They feed on small fish, crabs, and shrimp They feed on small fish, crabs, and shrimp Life Expectancy: Most squid's, like the octopus, live as little as 6 months. Feeding: Squid eat with a sharp, horny beak made of chitin. A lot of oxygen is required for the When it enters the the squid's body through the mantle, it enters the gills. Squid breathe by drawing water through their siphons into their mantles, the large muscular coverings over their bodies, where it passes over their two sets of gill filaments, absorbing oxygen and releasing carbon dioxide via diffusion. Since the oxygen has to pass the water and go into the blood. They have gills because they live underwater. The wall is one cell thick and is called ctenidium (two are called ctenidia). The gills distribute the oxygen into the cells of the squid and is transfered throughout its body.