Clamperl / Huntail / Gorebyss

Clamperl is an aquatic bivalve Pokémon that makes its home on the seafloor. Its bivalve shell is dark blue with a silver rim along the inner edges. The shell is used to clamp down on prey, as well as for protection. A fully-grown shell will have nicks and scratches all over it. Inside the shell is a fragile, light blue body composed of six spherical extensions with a pink, pearl-like head in the center, usually depicted with its eyes closed. There is a circular white patch on each cheek.
The pearls produced by this Pokémon amplify psychic power and can be blue in colour. These pearls are also 10 times more valuable than pearls produced by Shellder. It is carnivorous, clamping down on prey without letting go until it stops moving. When it is close to evolution, Clamperl will become too big to fit inside its shell. Clamperl is the only Pokémon that gains extra effects by holding a Deep Sea Tooth or Deep Sea Scale. Clamperl has been observed being carried by Drifblim, its natural predator.

Clamperl

Despite its appearance, it’s carnivorous. It clamps down on its prey with both sides of its shell and doesn’t let go until they stop moving.

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Armor Class	20
Hit Points	8d4+24
Speed	5 ft.	15 ft. Swimming
Strength	13 (+1)
Dexterity	10 (+0)
Constitution	16 (+3)
Intelligence	6 (-2)
Wisdom	10 (+0)
Charisma	10 (+0)
Senses	Passive Perception 9
Languages	Aquan
Challenge	1/2 (100 XP)
Special	Amphibious	Clamperl can breathe air and water
Action 1	Clamp	Melee Weapon Attack	d20+3 to hit
Reach 5 ft., one target	Hit 1d6+1 bludgeoning damage	and Clamperl attaches to the target.	While attached, Clamperl has advantage
on Clamp attacks against the target.	Clamperl can be removed with a successful	DC 22 Strength (Athletics) check as an action
Action 2	Water Gun	Range Weapon Attack	d20+3 to hit
Range 10/30 ft., one target	Hit 1d8 cold damage
Action 3	Iron Defense	Clamperl gains resistance to bludgeoning,	piercing, and slashing damage until
the start of its next turn
Action 4	Whirlpool (Recharge 5-6)	Clamperl attempts to trap a creature it can see	within 30 feet of it with a whirlpool.
The target must succeed on a	DC 11 Dexterity saving throw	or be surrounded with a whirlpool for 1 minute.	A trapped creature has their speed reduced by half,
and take 1d4 bludgeoning damage at the start of each of their turns.	The target can repeat the saving throw	at the end of each of their turns,	ending the whirlpool on a success

Huntail is a light-blue, aquatic Pokémon with a serpentine body. Orange, semi-circular fins run the length of its spine, and there are two additional fins on the underside of its lower jaw. A large, fan-like fin projects from the top of its head. White spots that are surrounded by orange rings, resembling its eyes, dot its body. It attracts its prey by wagging its fish-shaped tail, which features glowing eye spots, a single dorsal fin, and a single pectoral fin. Huntail's large mouth features sharp teeth and allows it to gulp its prey whole.
Huntail swims by wiggling its body, though it is not the strongest swimmer. Its sturdy spine and large eyes allow it to survive in the high pressures and darkness of the deep sea. According to tradition, Huntail washing ashore is a sign that something unfortunate will happen.

Huntail

It’s not the strongest swimmer. It wags its tail to lure in its prey and then gulps them down as soon as they get close.

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Armor Class	6
Hit Points	16d8+16
Speed	10 ft.	30 ft. Swimming
Strength	17 (+3)
Dexterity	14 (+2)
Constitution	15 (+2)
Intelligence	6 (-2)
Wisdom	14 (+2)
Charisma	10 (+0)
Senses	Darkvision 60 ft.	Passive Perception 12
Skills	Deception d20+0
Languages	Aquan
Challenge	3 (100 XP)
Special	Dive	If Huntail moves at least 15 straight toward a target	and then hits it with a Crunch attack on the same turn,
the target takes an extra 1d8 piercing damage
Special 2	Water Breathing	Huntail can breathe only water
Action 1	Multiattack	Huntail makes two attacks;	one with its Crunch and one with its Aqua Tail.
It can’t make both attacks against the same target
Action 2	Crunch	Melee Weapon Attack	d20+5 to hit
Reach 5 ft., one target	Hit 1d8+3 piercing damage
Action 3	Aqua Tail	Melee Weapon Attack	d20+5 to hit
Reach 10 ft., one target	Hit 1d8+3 bludgeoning damage
Action 4	Hydro Pump (Recharge 5-6)	Huntail shoots pressurized water in	a line 5-feet wide and 60-feet long.
All creatures in the area must make a	DC 13 Dexterity saving throw,	taking 4d8 cold damage on a failed save,	or half as much damage on a successful one

Gorebyss is a pink, serpentine Pokémon with a long, thin mouth. This pointed mouth is used to stab prey and drain their body fluids. However, it has also been known to feed on seaweed that grows between stones. Its pink skin becomes brighter in the spring and after it has fed. Its body colour changes with water temperature, with Gorebyss found in Sorcanno having blindingly vivid coloration. A long, purple-tipped fin extends from the top of its head, and there is a thin, pointed fin extending beneath its head. There are two purple shells on its chest, causing it to somewhat resemble a mermaid. The tail has a purple, circular fin at the tip and two white bands near its base.
This Pokémon's body is durable enough to withstand high-pressure levels in the deep sea, where it lives. Additionally, this adaptation allows it to withstand powerful attacks.

Gorebyss

The color of its body changes with the water temperature. The coloration of Gorebyss in Alola is almost blindingly vivid.

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Armor Class	16
Hit Points	16d8+16
Speed	10 ft.	35 ft. Swimming
Strength	16 (+3)
Dexterity	16 (+3)
Constitution	15 (+2)
Intelligence	6 (-2)
Wisdom	14 (+2)
Charisma	10 (+0)
Senses	Truesight 10 ft.	Darkvision 60 ft.	Perception 12
Languages	Aquan
Challenge	3 (700 XP)
Special 1	Dive	Gorebyss moves at least 15 feet straight toward a target	and then hits it with a Crunch attack on the same turn,
the target takes an extra 1d8 piercing damage
Special 2	Water Breathing	Gorebyss can breathe only water
Action 1	Multiattack	Gorebyss makes two attacks:	one with its Impale and one with its Aqua Tail.
It can’t make both attacks against the same target
Action 2	Impale	Melee Weapon Attack	d20+5 to hit
Reach 5 ft., one target	Hit 1d8+3 piercing damage
Action 3	Aqua Tail	Melee Weapon Attack	d20+5 to hit
Reach 10 ft., one target	Hit 1d6+3 bludgeoning damage
Action 4	Hydro Pump (Recharge 5-6)	Gorebyss shoots pressurized water in an a	line 5-feet wide and 60-feet long.
All creatures in the area must make a	DC 13 Dexterity saving throw,	taking 4d8 cold damage on a failed save,	or half as much damage on a successful one