The Sea of Monsters

Thalia is described as having died, Tyson seemingly dies temporarily, and the plot involves resurrection and threats connected to death.

Occasional descriptions of magical monsters being defeated or dissolving; minor injuries are mentioned but not described in a gruesome way.

Uses mild insults common in middle-grade literature, such as calling someone a 'donkey' or 'idiot'.

Central theme is Greek mythology; deities are characters, but it is treated as fantasy fiction, not a contemporary religious text.

Contains very mild adolescent romantic tension and crushes, entirely age-appropriate for middle schoolers.

Children face monsters, capture, pursuit, shipwrecks, mythical predators, and the threat of being eaten or transformed.

Frequent fantasy combat, monster attacks, sword fights, ship destruction, and battles. Violence is adventurous rather than graphically realistic.