Sharks Prefer Shallow Water, Weekends for Eating People 34.95K Jeff Neumann 05/28/10 05:15AM Filed to: Studies Studies Vacation Sharks Shark Attacks Nature Summer Animals Just in time for Memorial Day weekend, a new study says that shark attacks are more likely to occur on Sundays and during new moons. But don't worry, only 10% of shark attacks are deadly—you'll be fine! [AFP, pic]