Sea admirals are some of the most powerful people that fans have ever seen a piece over the years. When it comes to the Navy, Admirals are their strongest asset. Even among world governments as a whole, sea admirals are some of the most powerful fighters. Fans know that these guys have it in them to go up against the likes of Yonko, though defeating them is an entirely different conversation.
Still, sea admirals are some of the top tiers a piece world, with countless powerful abilities up their sleeves that they have demonstrated to fans over the years.

A piece: 32 strong swordsmen, ranked
Considering its swashbuckling setting, it's not surprising that talented sword fighters fill the piece. There are many strong ones here.
6
Ryokugyu: Groves of Wrath
While Admiral Greenbull hasn't shown many of his abilities to fans, fans know that he has some very interesting powers in Mori Mori no Mi. The strongest power he has ever displayed is called the Groves of Wrath.
Essentially, this technique sees him plant his fist directly into the earth, and then manipulate the roots freely. He can wrap his upper body in these roots, creating a golem-like figure. At the same time, he is able to create giant muscular fists from the ground and surround entire terrains with vegetation that he can manipulate however he wishes. It's an incredibly powerful technique that gave the Scabbards a lot of trouble, and even dragons like Momonosuke struggled against it. Gross of Worth may not be the strongest ability he has up his sleeve, but it's certainly very interesting.
5
Kuzan: Ice time
When it comes to former Admiral Aokiji, fans know that he has many powerful techniques up his sleeve. Of all the ones he's shown so far, and there have been plenty, the strongest is definitely Ice Time. This ability allows Kuzan to freeze anyone to the bone, and essentially ends the battle with one hit. This technique can essentially do the vast majority of one-shots a piece The world is easy.
There are only a few people who can survive this cold. For example, Whitebeard uses the powers of vibration that he was blessed with, thanks to his Devil Fruit, to break free. Meanwhile, Garp used the pure power of his conqueror's Haki to break through. Dofmingo, on the other hand, barely escaped death as he was able to break free before he was frozen into bones. However, Kuzan could essentially kill Doflamingo without lifting a finger.
4
Fujitora: Fierce Tiger
Admiral Fujitora has several powerful gravity-based abilities up his sleeve, stemming from his use of Zushi Zushi no Mi. He definitely has other powerful abilities that he hasn't revealed yet. But, for now, the strongest power fans have used him with is Raging Tiger.
Essentially, Fujitora uses vertical gravity in this technique and destroys the environment around him with the sheer force of gravity. He can also use it to a degree where it begins to bend the space around him, and deal massive damage to enemies. The true potential of this technique is unknown, as Fujitora hasn't gone all out in the story yet.

One piece: 6 strong marines from the old generation, ranked
The new generation of Marines is strong, but it can't compare to these old generation legends in one piece.
3
Kizaru: Yaskani no Magatama
When it comes to Admiral Kizaru, fans have seen him wield many powerful abilities, but Yasakani no Magata definitely takes the top spot. This attack sees him launch a powerful barrage of jewel-shaped light beams at the opponent. The target is completely engulfed by them, and there is no escape. Even the most skilled observation hockey users are going to struggle with this technique. He used it on Marco, who was only able to survive because of the power of his Phoenix Fruit.
Meanwhile, in Egghead, he used this power again, but this time, Luffy was able to counter it effectively. He can also use advanced techniques, such as shaping pearls into clones of himself and then confusing the enemy, as well as attacking using those clones.
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Sengoku: Shockwaves
A former fleet admiral, Sengoku is one of the strongest characters in the story, as evidenced by the fact that he fights against Whitebeard and Roger. With the power of his Daibutsu Devil Fruit, Sengoku can generate powerful blows from his palm.
These shockwaves can cause massive destruction, and in the anime, they were shown Equivalent to the earthquake produced by Gura Gura no Mi. He probably has many other powerful abilities that fans haven't seen. However, right now, the strongest ability he has is these shockwaves that can cover entire islands.
1
Akainu: Big explosion
Akainu's strongest technique, by far, is the massive explosion. Once again, there are probably other techniques that he hasn't shown fans, but at the moment, Great Eruption seems to be his biggest technique. This technique causes him to create an incredibly large fist of magma and then directly hit his enemies. It is given that it is the devil fruit Destructive abilities of the highest orderThis attack can prove fatal and will inevitably kill just about anyone in the story.
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