A brutal and omnivorous shark that will eat anything – including man. Whether because of some mystic ability or a more mundane coincidence, these sharks often are found dwelling in areas of frequent shipwrecks. Perhaps it was only after first tasting the drowned sailors of such wrecks that these sharks discovered the delights of man-flesh, but they now seem to have come to view humans as quite the treat and sometimes appear near human villages.
As a summoned, template, creature, this creature has several changes. Anything noted with  is what it gains from the template associated with the summoners’ alignment. Divine is always listed first, and Unholy afterwards.
Shark (CR 2)
N Large Divine / Unholy Animal (Aquatic, [holy/shadow])
Init +5; Senses [darkvision +60 ft./darkvision 120 ft. and see in darkness], blindsense 30 ft., keen scent; Perception +8
[Aura Sacred Aura/Profane Aura]
AC 14, touch 10, flat-footed 13 (+1 dex, +4 natural, -1 size)
hp 22  (4d8+4)
Fort +7, Ref +5, Will +2
Resist Water 10 [holy 5/shadow 5]
Weakness Lightning [shadow/holy]
Speed swim 60 ft. [70 ft]
Melee Bite +5 (1d8+4 [+1d4 holy/shadow]/19-20 plus grab)
Space 10 ft.; Reach 5 ft.
Special Attacks Crunch, Reteethe, Swallow Whole (1d8+4 damage, AC 12, 2 Hp)
Str 17, Dex 12, Con 13, Int 2, Wis 12, Cha 2
Base Atk +3; CMB +7 (+11 grapple); CMD 18
Feats Great Fortitude, Improved Initiative
Skills Perception +8, Swim +11
Once every 1d4 rounds as a swift action, the shark can bite an additional time while tearing some flesh from their opponent. If they succeed at hitting with their bite attack, the damage is 1d8+4 plus 1d4 bleed per round for 2 rounds.
Whenever a shark confirms a critical hit, gain +2 temporary strength bonus (max +4) for 4 rounds. This can be refreshed.
Divine – Sacred Aura (Su)
A divine creature emits supernatural light in a 10-foot radius around it. All those within the area of effect take 1d6 holy damage plus an additional 1d6 holy damage for every 5 racial HD the base creature has. A divine creature can suppress or resume the use of this ability as a free action.
Unholy – Profane Aura (Su)
An unholy creature emits supernatural darkness in a 10-foot radius around it. All those within the area of effect take 1d6 shadow damage plus an additional 1d6 shadow damage for every 5 racial HD the base creature has. An unholy creature can suppress or resume the use of this ability as a free action.