Great Diadem Urchin

Thick spines like the flanges of a royal crown bristle all across the surface of this strangely large golden sea urchin.

Great Diadem Urchin (CR 5)

Medium Vermin (Aquatic)
Alignment: Neutral
Initiative: -4
Senses: All-Around Vision, Low-Light Vision, Scent, Tremorsense 30 feet; Perception +1
Speed: 10 feet
Space: 5 feet

Defense

Armor Class: 20, touch 6, flat-footed 20 (-4 Dex, +14 natural)
Hit Points: 57 (6d8+30) Regeneration 3 (fire, acid)
Saving Throws: Fort +10, Ref -2, Will +3
stability
Immunity: mind-affecting effects

Offense

Melee: 3 spines +9 (1d8+5 plus poison)
Reach: 5 feet
Special Attacks: spines

Statistics

Str	Dex	Con	Int	Wis	Cha
21 (+5)	3 (-4)	20 (+5)	-	13 (+1)	2 (-4)

Base Attack Bonus: +4
CMB +9
CMD 15 (23 vs. Bull Rush or Trip)
Feats:
Skills: Perception +5

Racial Modifiers: +4 Perception

Languages:
Special Qualities: Amphibious

Special Abilities

Poison (Ex)

Delivery: Spines-injury
Fortitude Save: 18
Frequency: 1/round for 6 rounds
Track: Moderate Constitution
Initial Effect: stunned for 1 round
Secondary Effect: stunned for 1 round
Saves: 1 save

Great diadem urchin venom is shockingly painful and feels acidic at the moment of contact-though the worst of the pain fades after a moment.

Spines (Ex)

A great diadem urchin's spines can swivel to face any approaching creature. Any creature that attacks a great diadem urchin with an unarmed strike or a natural attack, or any Large or smaller creature that attacks with a one-handed weapon or light weapon, is automatically attacked by the hunter urchin's spines as an immediate action. If the spines hit, they can poison the target as well.

Ecology

Environment: Temperate or Warm Oceans or Coastlines
Organization: solitary, pair, cluster (2-5)
Treasure: none

Enormous and brilliantly colored diadem urchins are often sought after by terrestrial collectors or aquatic creatures seeking to simultaneously decorate and defend their throne rooms,
yet such beasts are never truly trainable, and attack anyone who comes close.