Chapter 612

Chapter 612 is called "Brought by the Shark They Saved".

Short Summary
In a brief flashback, three mermaids struggle to find out what is inside the Straw Hat's barrel, unaware it contains Caribou. They manage to open just enough of the barrel for Caribou to escape. The mermaids try to flee to the water, but it's no use. Caribou is able to capture them with the powers of the Numa Numa no Mi.

The Straw Hats arrive at Ryugu Palace, where King Neptune is scolded for leaving the palace unguarded. Luffy sneaks off when he smells food. He comes to a large iron door that he mistakes for the banquet hall. Inside, instead, he meets the Mermaid Princess, Shirahoshi.

Chapter Notes

 * Caribou's Logia type Devil Fruit is identified as the Numa Numa no Mi.
 * An octopus fishwoman (similar to one seen in Hatchan's Sea Floor Stroll) can be seen in this chapter.
 * Megalo is a pet of Princess Shirahoshi.
 * It turns out Luffy saved Megalo when he was taming Surume.
 * The light from Fishman Island comes from a root from the surface which catches sunlight and casts it to the bottom of the sea. This is why the locals settled in that area.
 * The root which catches the sunlight appears to have some sort of connection to the Adam Wood.
 * The status of the other Straw Hats are revealed.
 * Zoro is at Ryugu Palace.
 * Robin is researching history.
 * Franky is searching for a relative of Tom.
 * King Neptune's two ministers are introduced. Minister of the Right is a seahorse merman while Minister of the Left is a catfish merman.
 * The Mermaid Princess, Shirahoshi, is fully introduced as Luffy walks into her room out of curiosity.

Arc Navigation
Tasuketa Same ni tsurerarete