Hello everyone: I have noted that the jaws of the beak of some octopus are diferentiated in a lower and a upper jaw, it is possible to know for example from an unique jaw (of squid) to know if it is the lower or the upper one? Do exist a form to know the size of the animal in basis to beak measurements? Is the rostral length of a beak the measure from the tip of the beak to the jaw angle?, it is a straight line?, which is the proper form to measure a squid beak? Considering the finding of rests of squid beaks in albatross regurgitations, how did the albatross got this kind of deep organisms matter? Do Albatross feed on washed ashore squid carcasses?. Thanks in advance for your help. Juan Francisco Araya.