Waterfire Saga

By: Jennifer Donnelly
Location: FIC DON
Genre: Percy Jackson with mermaids!
Series: Waterfire Saga.
Book One:- Deep Blue
Book Two:- Rogue Wave
Book Three:- Dark Tide

“Help the others believe, Serafina. Help Ling believe she can break through the silences. Help Neela believe her greatest power comes from within, not without. Help Becca believe the warmest fire is the one that's shared. Help Ava believe the gods did know what they were doing. That's what a leader does—she inspires other to believe in themselves.”

"Deep Blue" by Jennifer Donnelly is the first in an ongoing series about a mermaid whose kingdom falls into enemy hands, and she must rise above her circumstances to take back what was lost, with a little help from comrades she meets along the way.
Serafina (Sera) starts the book off a somewhat spoiled princess struggling to prepare for her coming of age ceremony and come to terms with her abilities (song spells) in order to take hold of the kingdom reins. She strives to meet her strict mother's expectations as well as that which her role as a Principessa (Princess) calls for.

But things take a turn for the worst as Sera's kingdom is invaded, and she is on the run for her life along with her friends Neela and Ling. In all, there are a group of six destined mermaids fighting against a ruthless enemy, using their abilities and rising to the respective call.
Led only by her shadowy dreams, Sera searches for five other mermaid heroines who are scattered across the six seas. Together, they will form an unbreakable bond of sisterhood and uncover a conspiracy that threatens their world's very existence...