By losing the pleon—that long tail—they had one less delicious appendage that predators might grab onto.
通过失去 pleon——那条长长的尾巴——它们有了一个不那么美味的附属物,捕食者可能会抓住它。
PBS地球-动物趣闻
Basically, the long " tail" of a lobster, called a pleon, grows shorter over time and gets tucked under the body.
基本上,龙虾的长“尾巴”,称为 pleon, 随着时间的推移会变短, 并藏在身体下方。
英语百科
Decapod anatomy
The decapod crustacean, such as a crab, lobster, shrimp or prawn, is made up of 20 body segments grouped into two main body parts, the cephalothorax and the pleon (abdomen). Each segment may possess one pair of appendages, although in various groups these may be reduced or missing. They are, from head to tail: