From FFXIclopedia, the free Final Fantasy XI encyclopedia

Job: Dragoon/Warrior Family: Pugil Crystal: Water Weak to: Lightning, Ice Notorious Monster

Serra

Zone	Level	Drops	Steal	Spawns	Notes
Bibiki Bay - Purgonorgo Isle	49	Volans Greaves (23.1%) Pugil Scales (???%)		1	S, L
A = Aggressive; L = Links; S = Detects by Sight; H = Detects by Sound; HP = Detects Low HP; M = Detects Magic; Sc = Follows by Scent; T(S) = True-sight; T(H) = True-hearing; JA = Detects job abilities; WS = Detects weaponskills; Z(D) = Asleep in Daytime; Z(N) = Asleep at Nighttime

Notes:

• Lottery Spawn at F-9 along the western seashore from one of the four Jagil in the surf approximately every 1-4 hours.

• The specific Jagil is the one that appears between the Coralline Uragnite and the Coastal Opo-opo on Wide Scan. This is also where Serra appears on the list.

• Around 4200HP
• Possesses the Dragon Killer trait.
• Appears to favor Recoil Dive.
• Killable by: 2 characters level 50+

(see testimonials)

Historical Background

In Medieval folklore, the Serra is a large creature which is a combination of a fish, a lion, and a bird. It vaguely resembled a dragon, but had feathered wings and a body that was a cross of a fish and a lion. It would cause ships to sink by cutting into them with the serrated crest along its back. It appears in Philippe de Thaun's Bestiaire (1120s CE). It was apparently based on the sawfish. Serra is the Latin word meaning "saw". The Spanish word sierra is derived from serra.

Video