Foot Reflexology: massage the part of your foot corresponding to the part of your body hurting & it will slowly reduce pain. (promotes blood circulation to that part of the body-Learned this in cosmetology school,Helps get rid of headaches& cramps )
And the main reason sharks kill people is because they think your a fish. Also people kill more sharks, than sharks kill people. I can't remember exactly but its like every 1 person a shark kills, we kill like sharks.
What about Fear of water? Phobias: xenophobia definition is a bit simplistic; yes 'strangers' but also more towards the fear of foreigners. Usually, used socially and culturally than just 'strangers' but I digress.