The Mizu Mizu no Mi is a Logia-type
So far, there is one fish man who ate Devil Fruit, Vander Decken. Decken ate Mato Mato n Mi, a Paramecia type devil fruit that allows the user to mark particular targets, live, or inanimate object.
Fresh or salt water, it doesn't matter, it still drains a devil fruit user of their strength as long as it's ankle deep. We've seen Luffy and others exposed to fresh water and still be unable to swim.
A SMILE fruit is intended to grant the consumer the power of animal transformation, much like a Zoan-type Devil Fruit, by a process which involves transmission of the Lineage Factor of a real animal. Like normal Devil Fruits, SMILEs render those who consume them unable to swim.
He would attack anyone who made fun of his laughter and chose to stop laughing as a result.
Because his skeleton body does not have any flesh or organs, Brook is very light weight, increasing his speed and agility. This makes him the fastest member of the Straw Hats. He can run across water without sinking, and jump extremely high into the air.
The Mizu Mizu no Mi is a Logia-type Devil Fruit that allows the user to control, manipulate, and create water. It was eaten by Kirin Kusogawa, a member of the Hidden Pirates.
Luffy is a rubber man is because as a child he ate the Gomu Gomu no Mi (Gum-Gum Fruit). However, all users of such fruits share the same weak point: seawater. They cannot swim and lose all their strength when they come into contact with the ocean. This is one of the great ironies of the series.
So it would mean that he is a dragon originally not human. And dragons can fly in the sky, walk on ground and actually swim. Thats why he cant die. He cant drown himself and he can breathe underwater.
This means that the Sui Sui no Mi is the only Devil Fruit shown so far that lets the user maintain (although in particular conditions) the ability to swim. According to Oda, Sanji would have this Devil Fruit if he were allowed one.
It's not just a loss of muscle memory; entering a body of water saps them of all energy. Even entering a bath can drain a Devil Fruit eater of energy and prevent them from using their abilities. Notably, it does need to be a body of water.
If consumed by a human, this fruit will have no effect on them other than taking away their ability to swim. Oda said in a joking manner that a human who ate this fruit might become "more human-like" or find their "true spirit".
Kaze Kaze no Mi (風風の実) is a Logia-Type Devil Fruit that turns the user's body into wind and allows the user to control and generate wind or high pressure currents with their body.
Ningyo Ningyo no Mi, model: Mermaid(lit. Merfolk-Merfolk Fruit, model mermaid) is a Zoan-class Devil Fruit that allows the user transform partially or fully into a mermaid.
The Eisei Eisei no Mi (Eisei being Japanese for health / immortality) is a Paramecia Type Devil Fruit that grants the user the ability to control the immune system. It was eaten by Dios, former ruler of Zargott.
While Luffy is generally bold and fearless, certain events and people can still frighten him, and he can express utter shock as well. When he was a child, he was afraid when Garp would find out about his dreams of sailing as a pirate. He is wary of Nami's temper, as he thought whoever wanted to marry her is brave.
Monkey D. Luffy has developed an extremely high resistance (if not quasi-immunity) to most poison. Primarily due to his near-death experience against Magellan's poisonous Devil Fruit, he started producing antitoxins (antibodies) to combat future poisons and foreign toxins without noticing.
The East Blue is commonly known as the weakest of all the seas. Pirates who are considered great and threatening in this sea are regarded as low rate compared to pirates from the other seas and especially in the Grand Line.
"Gomu" means "Gum" in Japanese. In the Viz Manga, 4Kids and FUNimation dubs, it is called the gum-gum Fruit. It was originally a treasure that Shanks and his crew took from a CP9 member Who's Who, but was accidentally eaten by the series protagonist Monkey D. Luffy.
We know for a fact Shanks had it and it was stolen from the world Government.
In a shocking turn of events, it was revealed that the Gomu Gomu no Mi is actually a Zoan type of Devil Fruit and its real name is the Hito Hito no Mi, Model: Nika.
He isn't immortal, he said that in an earlier chapter, his body has to be destroyed for him to die. The power is to be reborn ONCE and only once, so a second death results in complete death. However, the power maintains the body in whatever states its in when the person returned to their body after death.
Also, due to the Devil Fruit powers allowing it, Brook has the ability to store objects in his skull by opening it along its crack. While Brook is able to do these things because of his Devil Fruit supported form, he however can still feel pain, as well as fatigue.
It was later revealed that Brook had no reflection or shadow. Brook explained that his shadow was stolen, though refused to say by whom out of regard for the Straw Hats' safety. Because of this, he could not go out into the sunlight or else he would disintegrate like a similar person who had also lost his shadow.