Killer whale

Killer whales, also known as orcas, were relatively small whales that were vicious marine predators.

Description
Despite their relatively small sizes compared to other whales, killer whales were among the largest sea predatory mammals.

Killer whales used their echolocation by emitting high-pitched sound to detect objects and other creatures. This ability did not work if the whale's hearing were to be impaired or if its detecting area was under the effect of a silence spell.

Behavior
Orcas were vicious predators that attacked anything within their range of detection. However, they were not excessively hostile, usually only attacking when hungry or provoked.

They were also intelligent animals that could be communicated with.

Combat
The main weapons killer whales used in combat were their powerful bites, which they could use to hold down their prey until it drowned.

Ecology
Despite being aggressive hunters, killer whales had a caring family structure, fiercely defending their calves, and sometimes even other whales, against threats. They were also known to ally themselves with aquatic elves.

Diet
Killer whales were typically known to hunt fish and squids, as well as several kinds of warm-blooded animals, including seals, other whales, porpoises, dolphins, walruses, and penguins. They were resourceful hunters that employed sophisticated hunting strategies such as breaking ice sheets to knock their occupants into freezing cold water. A pod of killer whales was capable of collaborating to bring down much larger prey.

Habitats
Orcas were commonly found in the temperate latitudes of Karpri. Whales native to that planet were unusually calm and graceful, a trait which caused them to be heavily hunted by outsiders. One of the bodies of water that they were most often encountered in was the Sea of Fallen Stars. They were also known to be found in waters around the North.

Notable Killer Whales

 * The storm giant princesses Nym, Serissa, and Mirran each had a killer whale pet. Nym used hers, an enormous specimen, as her mount.

Appearances

 * Storm King's Thunder
 * The Tortle Package
 * Dungeon #66: "Operation Manta Ray"