In the Heart of the Storm. Pirate in the Desert.

In the Heart of the Storm
Blown off course by a storm, a pirate ship carried on the back of a giant Nudibranch takes shelter at an island where no island should be.
Fenn, the mage in charge of their creature transport, senses something is off, but the island's uncharted location is only the first sign of an ominous presence lurking out of sight.
The malevolent entity will force Fenn to make unbearable choices if he ever wants to see his home again. Pirate in the Desert
Dagen's pleasant life in the pirate kingdom of Janolous Cove, raising giant nudibranchs to carry their ships, comes crashing down when a demon comes to claim his next of kin.
Check out this story if you enjoy unique fantasy worlds, pirates, and scary demon uncles. This book contains two prequel stories for "The Bone Master" Book 2 in The Sands of Achten Tan series.
It is standalone, and you can enjoy it even if this is your first encounter with this series.
It doesn't contain any spoilers for either book.
It also contains an excerpt from The Bone Master.