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Plesioth

An enormous, flightless, aquatic wyvern with wings that have evolved into fins for swimming. Although superficially fish-like, they can move on land as well. They love frogs.

A large Piscine Wyvern that lives underwater. Also called the “King of the Waters,” its attack power is unrivaled. It cannot fly and mostly stays in the water, but it can also move on land. Frogs are its favorite food.
Our translation of モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 230.

Guide book figures for Plesioth

Health

Quests	Health	Capture	Limping
Easy, Village Low Rank	2,200 (1,400)	30%	20%
Gathering Hall Low Rank	4,400	30%	20%
Village High Rank	4,000 (2,200)	18%	12%
Gathering Hall High Rank	5,400 (3,000)	18%	12%
G-Level	7,600 (3,600)	15%	10%

Capture and Limping are the share of health left when it can be captured and when it starts to limp away. The figure in brackets is its health in quests with two or more of it.

Size

Small	Big	King
2245.7	2847.7	3102.4

Small is the most a gold small crown can be. Big and King are the least for a silver and a gold crown.

Status ailments

	Effect	Tolerance	Buildup loss	Rise	Max
Poison	120 damage	100	10 every 5 s	75	400 (550)
Paralysis	10 s	100	5 every 10 s	75	400 (550)
Sleep	30 s	100	5 every 10 s	50	300 (400)
Stun	10 s	130	5 every 10 s	50	330 (430)

Tolerance is the buildup needed for the ailment. It goes up by the Rise figure each time, up to Max; Max in brackets is for G-Level. Poison effect is the total damage, the others are how long it lasts.

When enraged

Attack	Defense	Speed
+50%	-20%	+10%

Attack is the extra damage it deals to hunters. Defense above zero means it takes less damage.

Hitzones

Part	Cut	Impact	Shot	Fire	Thunder	Ice	Dragon	Stun
Head	30	30	40	25	25	5	5	100
Underneck	60	50	60	30	30	5	5	0
Belly	100	80	50	35	35	5	5	0
Back	20	20	20	20	25	5	5	0
Wings	25	25	30	20	20	5	5	0
Legs	50	40	30	10	10	5	5	0
Tail underside	50	40	35	30	30	5	5	0

Higher numbers take more damage. Stun is how much impact hits on that part add toward a stun.

Part durability

Head	130
Neck	150
Body	250
Left wing	100
Right wing	100
Left leg	250
Right leg	250
Tail	180

Breaks and tail cuts

Back fin	Bring the body's durability to 0 twice.

Carves and rewards

Carves: Body 4.

Easy

Item	Body	Capture	Break	Drop
Sm Lobstershell	5%	-	-	-
Piscine Fang	20%	-	-	-
Plesioth Scale	50%	-	100% (Back fin)	25%
Plesioth Scale ×2	-	15%	-	-
Lg Monster Bone	25%	25%	-	-
Wyvern Fang ×3	-	60%	-	-
Wyvern Tears	-	-	-	75%

Low Rank

Item	Body	Capture	Break	Drop
Sm Lobstershell	8%	10%	-	-
Plesioth Scale	70%	-	8% (Back fin)	22%
Plesioth Scale ×2	-	39%	-	-
Plesioth Fin	22%	18%	92% (Back fin)	3%
Wyvern Fang ×3	-	33%	-	-
Wyvern Tears	-	-	-	75%

High Rank

Item	Body	Capture	Break	Drop
Sm Lobstershell	10%	12%	-	-
Lg Lobstershell	2%	8%	-	-
Plesioth Scale ×2	-	5%	-	-
Plesioth Fin+	18%	18%	87% (Back fin)	10%
Plesioth Scale+	64%	27%	8% (Back fin)	25%
Plesioth Fin	-	-	5% (Back fin)	-
Wyvern Stone	6%	-	-	-
Wyvern Fang ×3	-	30%	-	-
Wyvern Tears	-	-	-	33%
Wyvern Sobs	-	-	-	32%

G-Level

Item	Body	Capture	Break	Drop
Gt Lobstershell	2%	8%	-	-
Lg Lobstershell	10%	12%	-	-
HvyPiscineFang ×2	-	20%	-	-
ThckPlesiothScl	60%	32%	8% (Back fin)	25%
Plesioth Fin+	-	-	5% (Back fin)	-
Plesioth Scale+ ×2	-	5%	-	-
SpecPlesiothFin+	23%	23%	87% (Back fin)	10%
Big Wyvern Stone	5%	-	-	-
Wyvern Tears	-	-	-	23%
Wyvern Sobs	-	-	-	42%

Figures from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), pages 230 and 231.

Quests it appears in

Water Wyvern in the DesertPokke Village Master of the Giant LakeGathering Hall, Low Rank Go Fish Goldenfish!Gathering Hall, Low Rank Dual PlesiothGathering Hall, High Rank Water Wyvern in the DesertGathering Hall, High Rank Eyes in the Underground LakeGathering Hall, G-Level Hunter's FuneralGathering Hall, G-Level Water Wyvern in the DesertPokke Village Dual PlesiothPokke Village Eyes in the Underground LakePokke Village Operation Desert WindsPokke Village Plesioth TrainingTraining School

Green Plesioth

A subspecies of Plesioth whose scales are a vivid emerald green. Its habits and attacks are the same as an ordinary one's, but it has more health and higher resistance to abnormal status, stays enraged longer, and is even more agile.
Our translation of モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 232.

The Underwater TerrorGathering Hall, Low Rank Dual PlesiothGathering Hall, High Rank The Underwater TerrorGathering Hall, High Rank The Meeting of Sea and AirGathering Hall, High Rank G-Lvl Gathering - Old DesertGathering Hall, G-Level Giant Green Waves of VerdureGathering Hall, G-Level Subspecies Three!Gathering Hall, G-Level Master of the Giant LakePokke Village Dual PlesiothPokke Village Green Waves of VerdurePokke Village Carnivores of the Old JunglePokke Village

Guide book figures for Green Plesioth