Magic Tree House: Merlin Mission 11*

Dark Day in the Deep Sea

by Mary Pope Osborne

Release: March 2008
Format: Novelette
Genre: Fantasy
Audience: Children
Content: Definite Time Travel
Original Language: English

When Jack and Annie join a group of nineteenth-century explorers aboard the H.M.S. Challenger, they learn about the ocean, solve the mystery of its fabled sea monster, and gain compassion for their fellow creatures.

— based on fandom.com

DEBUT

Dark Day in the Deep Sea (Random House, March 2008) [print · e-book].

VARIANTS

1 English variant

TAGS(SPOILERS!)

Time Periods

Circa AD 1800 to 1899
Circa AD 2000 to 2099: based on a date of 2019 in To the Future, Ben Franklin!

Timeline Models

Single Static Timeline: Within the series, anything the kids do seems to fit known history rather than change it.

Time Travel Methods

Real-World Tags

H.M.S. Challenger

Fictional Tags

Kracken and Other Water Monsters: The crew is looking for a sea monster.
Merlin: possibly offstage [Need to check this.]
Morgan le Fay: [Need to check this.]

Groupings

Magic Tree House (story series): Merlin Mission 11 [originally Magic Tree House 40 in the pre-2017 numbering system]

TIME TRAVEL ITINERARY (SPOILERS!)

From the magic tree house in Frog Creek, Pennsylvania, circa 2019 ⋙ to the H.M. S. Challenger, circa 1873. Round trip.