For many people, summer means frolicking on the beach with friends and family. It is a time to enjoy the sun, the water and the beautiful views - but there are also discomforts associated with the beach: too much sun leads to sunburns, sand everywhere including in your swimsuit and the huge crowds and subsequent larger amount of litter. There is, of course, the unspoken danger of sharks. People normally do not think about sharks in Korea but lately they have been in the news - their recent appearances are blamed upon global warming.