Welcome to the charming seaside town of Fathom, where each tide brings new adventures! Nestled between lush island peaks and sparkling blue waters, Fathom is a vibrant and friendly community, home to eclectic groups of marine biologists. For decades, Fathomite and legendary researcher Nautilus Leclerc has led the charge in uncovering the island’s ocean mysteries - but now, after almost 50 years, he’s finally hanging up his drysuit.

With Leclerc’s departure comes an opportunity; up to four daring team leaders will set sail with their teams to prove themselves worthy of continuing his groundbreaking work. Only one will rise to the challenge - who will conquer the currents and claim the title of Fathom’s next great marine biologist?