The movie I’m trying to find is about 2 sisters? Maybe brother and sister. I think they might be around 12-15 years old. (Don’t know for sure) They are (I think) eating breakfast with thair dad. (I know this part is in the movie) They somehow find their mom’s book. The dad and kids somehow get in the book. They end up on the ship and sleep in wooden hammocks that sway side to side when the ship moves. They go looking for people one of the people is Medusa. (snake haired lady).(other people are found before her) Everyone they find somehow gets captured, and Medusa is blindfolded and getting water for the workers that captured them. I think there is a centaur (half man half horse) in the movie. That’s all I remember. I don’t remember when I came out.