Chapter 661

Chapter 661 is called "A Lake That Spews Forth Coat-Jackers".

Cover Page
From the Decks of the World Vol. 42 - "Impel Down - Warden Hannyabal and Chief Guard Domino".

Chapter Notes

 * Hannyabal and Domino are seen for the first time since the timeskip, Hannyabal is the new Impel Down Warden while Domino is now one of the chief guards.
 * Trafalgar Law's Devil Fruit ability is named and revealed to be the Ope Ope no Mi.
 * It is revealed that Tashigi know Haki