Giant Beetle, Water (CR 3)
Alignment: Always neutral
Initiative: -1 (Dex)
AC: 17 (-1 Dex, +8 natural), touch 9, flat-footed 18
Hit Dice: 4d8+12 (26 hp)
Fort +3, Ref -1, Will +0
Speed: 10 ft., swim 30 ft.
Space: 5 ft./5 ft.
Base Attack +5; Grapple +5
Attack: +5 melee; +2 ranged
Special Attacks/Actions: -
Abilities: Str 15, Dex 8, Con 16, Int -, Wis 10, Cha 9
Special Qualities: Air bubble
Advancement: 6-9 HD (Large); 10-15 HD (Huge)
Climate/Terrain: Deep fresh water
The giant water beetle is found only in fresh water no less than 30 feet deep.
Water beetles sometimes inhabit navigable rivers and lakes, in which case they can cause considerable damage to shipping, often attacking and sinking craft to get at the tasty morsels inside.
Although they are air breathers, water beetles manage to stay underwater for extended periods of time by catching and holding a bubble of air beneath their giant wings. They will carry the bubble underwater, where it can be placed in a cave or some other cavity capable of holding an air supply.