Nautilus
The nautilus breathes by means of two pairs of gills
Nautilus
Common Nautilus
Female Naut
Nautiluses are only found in the Indo-Pacific from 30° N to 30° S latitude and 90° to 175° E longitude. They inhabit the deep slopes of coral Reefs
Nautiluses usually inhabit depths of several hundred metres. It has long been believed that nautiluses rise at night to feed, mate and lay eggs, but it appears that, in at least some populations, the vertical movement patterns of these animals are far more complex
My 7 facts about my Nautilus
:Shell is divided in chambers. Nautilus is born with 4, but it expands number of chambers throughout a lifetime. Adult nautilus usually has more than 30 chambers. Animal is located in the newest and the largest chamber.
:Chambers of the shell are filled with gas and water. By changing the amount of gas, nautilus adjusts its buoyancy.
:Nautilus moves by jet-propulsion. It ejects huge amount of water through a siphon. Position of the siphon determines in which direction nautilus will travel: backward, forward, upward or downward.
:Nautilus has 90 long tentacles, located outside the shell. Tentacles are covered with ridges and grooves which facilitate manipulation of prey.
:Nautilus has a parrot-like beak which slices the food roughly. Another organ, called radula, grinds the food before swallowing.
:Nautilus hunts and eats crabs, shrimps and fish. It also feeds on dead animals.