There are 3 books in the Petticoat Pirates series.
The Petticoat Pirates series does not have a new book coming out soon. The latest book, The Seahorses of Scallop Bay (Book 3), was published in August 2015.
The first book in the Petticoat Pirates series, The Mermaids of Starfish Reef, was published in April 2015.
The Petticoat Pirates series primarily falls into the General Fiction genre.