Fun shrimp fact: Certain algae produce a compound called astaxanthin, which has a red colouration, and animals that eat the algae retain the astaxanthin (and its red pigment). Astaxanthin is a potent antioxidant and incredibly healthy for humans. The red colour of cooked shrimp and prawns is astaxanthin - not blood, as some people assume.
Fun shrimp fact: Certain algae produce a compound called astaxanthin, which has a red colouration, and animals that eat the algae retain the astaxanthin (and its red pigment). Astaxanthin is a potent antioxidant and incredibly healthy for humans. The red colour of cooked shrimp and prawns is astaxanthin - not blood, as some people assume.