Squid tentacles are " muscular hydrostats, " meaning the tissue can be held firm by muscle tension.
鱿鱼触手是“ 肌肉静水压器” , 这意味着组织可以通过肌肉张力保持牢固。
英语百科
Muscular hydrostat
A muscular hydrostat is a biological structure found in animals. It is used to manipulate items (including food) or to move its host about and consists mainly of muscles with no skeletal support. It performs its hydraulic movement without fluid in a separate compartment, as in a hydrostatic skeleton.