Ice Crypt: Mermaids of Eriana Kwai, Book 2 (Unabridged‪)‬

Meela has just returned from the Massacre - the annual attempt to wipe out the mermaids threatening her people's survival. After forming an unlikely connection with Lysi, a mermaid she was trained to kill, Meela is determined to stop the war between humans and merpeople for good. She knows of a legendary weapon that could bring peace if she uses it against King Adaro, ruler of the Pacific Ocean. But her people have plans for future Massacres and refuse to help her uncover it. 

While Meela works in secret to unearth the Host of Eriana, Lysi is held captive under Adaro's tyranny. Sent to the battlefront, Lysi joins forces with a band of rebels that could either bring her freedom - or have her executed for treason. 

Separated by the vast Pacific Ocean, Meela and Lysi must find a way to defeat King Adaro and end the war that has been keeping them apart.