What is the black that runs along the bottom of raw prawns? I know the top line is digestive tract?

Question

I am preparing fresh prawns and I am familiar with removing the digestive tract that runs along the back or top of prawns. However there is a black line that runs along the bottom of the prawns I have bought. I am wondering what this black line is and whether that needs removing as well or not?

Answer 1

not really sure what it is, but it's safe to eat, so no worries.  make sure to wear gloves while cleaning them!  they are covered in bacteria!