A German woman, who was snorkeling in waters near Sharm el-Sheikh, died Sunday after being attacked by a shark.
She is the fifth shark attack victim since Nov. 30 in the Red Sea resort area. Three Russians and a Ukrainian were also severly injured.
According to CNN, tourists, who are attracted to the area for the warm weather and clear waters, are being warned to stay alert.
There are a few explanations for the series of attacks being offered by shark experts and local observers, the BBC reported.
Some say overfishing in the Red Sea caused sharks to move closer to shore, while others believe sacrificial sheep and cattle carcasses dumped into the water may be the culprit.