In this fourth explorers adventure we meet Ursula, a part mermaid girl who is determined to follow in Stella''s footsteps and help her to defeat the Collector!
Ursula knew the submarine wasn-t designed to go this deep, but what choice did they have? No one wanted to get swallowed up by a colossal sneezing jellyfish!
In a distant watery corner of the Explorers Kingdom, a submarine engineer, Ursula, is determined to become an explorer. Unfortunately, she hides an extraordinary secret, which makes her the sworn enemy of the Ocean Squid Explorers- Club were they ever to find out . . . But when The Collector threatens the Club, Ursula throws caution to the wind and leads an expedition through treacherous waters, filled with gremlins, aboard the Blowfish submarine - and joined by her friends Max, Genie and Jai - and even her idol Stella!
Thrilling, heart-pounding adventure with exquisite detail throughout. Alex Bell''
