Bloodbloater (5e Creature)
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Tiny ooze, unaligned
Skills Stealth +3
Amorphous. The bloodbloater can move through a space as narrow as 1 inch wide without squeezing.
Spider Climb. The bloodbloater can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 2 (1d4) necrotic damage, and the bloodbloater regains an equal number of hit points if the target is not a construct, undead, elemental, or object. If this would incur a Constitution saving throw to maintain concentration, the DC is 15 instead of 10.
Only 8 inches in diameter, bloodbloaters are the smallest of oozes. While primarily found in water, they are able to travel on land, if slowly. A newly formed or starved bloater appears as nothing more than a round film floating atop the water, while a bloater that has killed a large enough creature recently to fully inflate can clearly be seen as a floating ball of blood. Even in the latter state, bloaters continue to float endlessly, draining the blood of any creatures within its sight.
See also: Swarm of Bloodbloaters.