Shrimp inedible parts are shrimp thread and shrimp head.
Shrimp line is definitely to be removed, because the shrimp line is the shrimp's digestive tract, the inside in addition to feces, there may also be germs, so eat prawns, do not try to convenient, a mouthful of swallowed, be careful to eat a bad stomach is not good. Because shrimp and people are not the same, people's organs in the body, while the shrimp's organs in the head.
So in order to figure convenient or other reasons and do not remove the head of the shrimp, wait until cooked and then screwed off, shrimp viscera will flow out, the main thing is that the shrimp's internal organs are actually very dirty, the dirty things steamed is not dirty, there is a very fishy, it will be the image of the shrimp's texture, and even the sensitive people will be vomiting phenomenon, which is not good.
Shrimp growing environment
Shrimp swimming and fish are very different, the fish swing tail fins can swim forward, and shrimp do not have fish like the caudal fins, there is only a tail and many calves, then it is how to swim, shrimp also have it! "high skills". Shrimp is a good swimmer and can do long distance swimming with its legs.
It swims those swimming feet like a wooden paddle as often as neatly backward paddling, the body is Xu Xu forward drive. When frightened, its abdomen agile flexion and extension, the tail to the downward front paddling, can continuously leap backward, the speed is very fast. There are also shrimp are not good at swimming, the big lobster most of the time on the bottom of the sand and gravel crawling.