Book 2

Murky Seas

by Lily Harper Hart

Published 8 January 2017

Book 4

Sunken Seas

by Lily Harper Hart

Published 6 September 2017

Book 5

Choppy Seas

by Lily Harper Hart

Published 3 January 2018

Book 7

Dangerous Seas

by Lily Harper Hart

Published 7 September 2018

Book 8

Perilous Seas

by Lily Harper Hart

Published 31 March 2019

Book 9

Raging Seas

by Lily Harper Hart

Published 5 August 2019