Chapter 607

Chapter 607 is called "10,000 Meters Under the Sea".

Cover
"Franky, riding on a mecha-horse he built, has a race with a (wild) mustang", P.N. Magic Mushroom-san

Short Summary
The Straw Hat Pirates and the pirates on the Flying Dutchman are escaping from the erupting vulcano. As the other pirates, pulled by Wadatsumi and Ankoro, flee out of sight, the Strawhats jump into a dark trench with Surume leading. They now fall, with an avalanch of stones following them that are getting closer to the Thousand Sunny. Right before being hit, Usopp saves the crew by using a Hissatsu: Midoru Boshi Saragassi, growing seaweed on the cliff, catching most of the rocks. However, some rocks fall on the head of the Kraken, and they plunge into the deep sea, 10 000 meters below. Sanji, thinking of mermaids, almost faints. Being surrounded by enormous sea creatures, three fishmen come close. Luffy is asked to become a subordinate to the New Fishman Pirates, while Usopp fuels the tank to do Coup de Burst to Fishman Island. The chapter ends with Luffy turning down the offer by saying, "No way, morons!"

Chapter Notes

 * Usopp reveals yet another attack, Hissatsu: Midoru Boshi Sargasso.
 * Sanji almost dies, thinking of mermaids.
 * The New Fishman Pirates are introduced, just their combatant, Hammond, is named.
 * Fishman Island is seen for the very first time.
 * Zoro's left eye is open when he prepares to slice the rock falling from the avalance, this is due a mistake.
 * A male merman appears for the first time in One Piece as a member of the New Fishman Pirates. This one is half man, half octopus.
 * Surume is revealed to have already been tamed however Luffy is the first human to tame it.