What diseases were there in the trench in World War 1? Trenche foot was very common in the trench warfare. caused from wet feet and not being able to change their socks and boots. Edit
Repels Sharks No.........human urine actually repells sharks and other fish.
, I dive with sharks everyday! Many people that find out I dive with sharks on a daily basis ask me this question with horror and concern written all over their face. No, menstration blood does not attract sharks. This is because they're only stimulated by the blood of fish (especially fatty ones such as tuna). They're more attracted to the vibrations and sounds that we make while splashing on the surface of the water, or while diving.