Bigwands reviewed Dark Day in the Deep Sea by Mary Pope Osborne (Magic Tree House #39: A Merlin Mission)
When eight-year-old Jack and his seven-year-old sister, Annie, join a group of nineteenth-century explorers aboard …
Review of 'Dark Day in the Deep Sea' on 'Goodreads'
4 stars
I think any kids with an interest in oceanography would find this am exciting installment in a great series I loved growing up.