War Coral

Responsible for a number of deaths, War Coral is a rare life form that dwells in the waters of the Western oceans. It appears to be normal coral growths that might appear in the area. In reality, War Coral is a Wyld-touched menace. When it senses the approach of a boat or slow-moving animal (such as a whale or Sunner), the War Coral grows toward the victim in a lightning-fast surge. These huge coral ‘spears’ are able to pierce wood and flesh easily, skewering the War Coral’s victim.

The Coral is actually not attacking, but defending itself, although overzealously. It does not eat, or in any way gain nourishment from the victims it impales, it is trying to prevent them from attacking it. Because of the method of its defensive attack, old colonies of War Coral often resemble gigantic sea urchins. War Coral is easily defeated. Once extrusions are separated from the main body of the colony, they are no longer able to draw on conserved energy to accelerate their growth. The colony, once deprived of its attackers, is slow to re-grow new limbs.

Source: Telgar on the Exalted unofficial wiki