Piranha: drops, immunities and how to handle them

Piranhas are level 2000 enemies that surge from the water to bite your boat and bite you. Each of their touches temporarily cuts off your dash, jump, and skills, making them hellish out at sea. They target the player as a priority, they're faster than the fastest of boats, and above all they are immune to M1s from fighting styles and swords. The community ranks them the second most annoying enemy in the game, just behind the Terrorshark.

How to get it

Out at sea, between Sea Danger Level 1 to 6 in Third Sea, and also in Second Sea. They can also appear while you're fighting another Sea Event. They disappear on their own if they drift too far from their spawn point.

Technical Sheet

Data	Value
Level	2000
HP	16,000
Damage per touch	750
Spawn zones	Sea Danger Level 1 to 6, Second Sea and Third Sea
Added in	Update 20

What They Drop

Reward	Quantity
Electric Wing	1 to 3
Beli	2,500 to 5,000
EXP in Second Sea	5,000 to 6,000
EXP in Third Sea	90,000 to 105,000

Note: The Fandom infobox specifies that Electric Wings are not guaranteed, while its own drop list presents them without reservation. So count on 1 to 3 when they drop, not on every kill.

Their Behavior

They leap out of the water to attack both your boat and you.
Two forms of attack: the bite and the electric discharge.
Being touched temporarily disables your dash, jump, and skills. That's what makes them so dangerous: you end up immobile in the middle of the sea.
They target the player before the boat.
Elemental immunity works on them if you're a few levels above, but be careful: their electric discharges still pass through and damage Elemental fruit users.

What Works Against Them

Option	Why It Works
M1 from fruits (Dragon, Kitsune...)	The only M1s that touch them. Dragon is excellent: on a boat like the Beast Hunter, position yourself at the rear and chain M1s, its huge range is enough to kill a Piranha in a few hits.
Skull Guitar [X]	Stuns them in place, leaving you free to chain your other attacks.
Venom [F]	The flight deals continuous damage that grinds them down effectively.
Blizzard [V] and [C]	Freezes them in place long enough to finish them.
Lightning [V] and [X]	Very effective, useful since killing 30 Piranhas is part of the conditions to upgrade Lightning at the Admin Panel (with 300 Mastery).
Magma or Ice awakened with the Pilot Helmet	Allows you to dash out of range to dodge the discharges.

Dodging Them Instead of Fighting

Keep going straight: they eventually despawn after a few seconds. They'll gnaw on your boat a bit as you pass, but you get through.
With the Miracle, you literally take no damage: they bite too far back and their attacks don't reach the ship's hitbox.
The Guardian also blocks them, thanks to its curved hitbox. The Sloop gets the same result.
Just know they're among the fastest enemies in the game and can outrun the speediest boats.

Good to Know

Impossible to M1 them with a sword or fighting style: they're immune to it. This is especially crippling for a Buddha-sword main, who finds themselves nearly without an answer.
Before Update 24, any M1 could touch them. That update introduced the immunity.
They can reach up to The Sentinel and damage it, despite its altitude.
Known bug: they sometimes continue to damage your boat after their death. The community calls them "Phantom Piranhas".