Blade of the Scolopendra

Blade of the Scolopendra is the first book in the Daughter of Nyx series. Please be supportive, as this is my first story here (and probably in general), so if it's not that good, that's why :P

Summary
Sabrina lives at Camp Half-Blood with her best friends, Kaito and Ariel. Gaia has recently been taken down, and the children of Protogenos have been becoming more numerous. One day, a boy named Logan O'Donnell comes to camp, with no claimed godly parent. However, exactly when he comes to camp, tidal waves devastate the coastline of California, near the Camp. Could he be responsible for these tidal waves? Or is it something bigger?