Summary

Chapter 23

A giant sea monster grapples the ship and stops it from being able to use any of their weapons. Leo manages to get to a crate filled with Greek fire, which he uses to injure the creature. He’s knocked out in the battle though and wakes up to find that he, Hazel, and Frank had been taken prisoner by smaller aquatic creatures working alongside the giant one. Frank is angry with Leo because he was alone with Hazel, but Leo is able to calm him down and explain that they were just learning more about Sammy. The aquatic creatures return and separate Frank and Leo to be interrogated.

Chapter 24

The aquatic monsters reveal themselves to actually be fish centaurs, half-brothers to Camp Half-Bloods centaur, Chiron. They reveal they have their own underwater camp where they train heroes. Leo manages to convince...