These frozen cooked butterfly shrimp tails are also known as ebi sushi.  Ebi is a preparation style in Japan that involves the shrimp being "butterflied" meaning that they are split open from the bottom side and laid on flat.  Ebi is very popular among all sushi fans and typically lightly steamed or and paired with rice in nigiri.  Ebi is one of the flavorful ingredients in sushi.    

6.3 oz package (30 pieces)Pre-cleaned white shrimp tails

EBI Shrimp

6.3 Ounces