The Gelatinous Abominations are a species of monster introduced with the Troll Warzone, said to be created by the troll, Magic Stick. They are given as a low level Slayer assignment and can be found in the Taverley Slayer Dungeon southeast of the Slayer master, Turael (or Spria). The cave isn't very far, just southeast of Turael, and is near the Lady of the Lake. The creatures are level 4 and are easy to kill. However, spiked gauntlets, available for free from any Slayer master, are required in order to kill them, or they would always stay at 1 life point. The gauntlets must be worn, not just in inventory. The player would automatically crush them with the spiked gauntlets if they are in melee range. Otherwise, the player must manually click the "Crush" option, or they could continue attacking the abomination normally. The player would only auto-crush one abomination if they get multiple of them to 1 life point at the same time.
A Gelatinous abomination dying as the player rips out the heart with Spiked gauntlets.