Question 1

True or false: Orcas are strictly fish-eaters and rarely hunt marine mammals.

Accepted Answer

False. Some orca ecotypes specialize in hunting seals, sea lions, and even great white sharks; diet varies widely by population.

Question 2

True or false: Orcas are apex predators that eat everything from fish to great white sharks.

Accepted Answer

True. Some orca pods specialize in hunting great white sharks for their livers, and they also prey on seals, whales, and fish—truly top of the food chain.

Question 3

True or false: Orcas have their own distinct dialects and cultures passed down through generations.

Accepted Answer

True. Different pods have unique vocal dialects and learned hunting techniques (like beaching to catch seals), which are culturally transmitted, not instinctual.

Question 4

True or false: Orcas are actually the largest species of dolphin, not whales.

Accepted Answer

True. Orcas belong to the oceanic dolphin family Delphinidae, making them the largest dolphins. Their common name 'killer whale' is misleading taxonomically.

Question 5

True or false: Orcas have never been known to attack humans in the wild.

Accepted Answer

True. Despite their 'killer' reputation, there are zero documented fatal wild orca attacks on humans. All incidents involve captive orcas, which is a different context.

Question 6

True or false: All orcas belong to a single, globally interbreeding species.

Accepted Answer

False. There are multiple distinct ecotypes (e.g., resident, transient, offshore) that rarely interbreed and may be separate species or subspecies.

Question 7

True or false: Orcas are actually a species of dolphin, not a true whale.

Accepted Answer

True. Despite being called 'killer whales,' orcas belong to the family Delphinidae, making them the largest species of oceanic dolphin.

Question 8

True or false: A single orca pod can have its own distinct dialect passed down through generations.

Accepted Answer

True. Orca pods develop unique vocalizations that function like cultural dialects, learned socially from mothers and elders.

Question 9

True or false: Orcas sleep with only half their brain at a time, like many other cetaceans.

Accepted Answer

True. Orcas are conscious breathers and engage in unihemispheric slow-wave sleep, resting one brain hemisphere while the other stays alert.

Question 10

True or false: Orcas have been observed hunting moose in the water.

Accepted Answer

True. Off the coast of British Columbia, orcas have been known to attack and kill swimming moose as they travel between islands.

Question 11

True or false: All black-and-white orcas belong to the same species, Orcinus orca.

Accepted Answer

False. Recent genetic research suggests several distinct species or subspecies exist, such as the resident, transient, and offshore types.

Question 12

True or false: Orcas in the wild have never been known to attack a human being unprovoked.

Accepted Answer

True. Despite their name, there are no confirmed fatal wild orca attacks on humans; all recorded incidents involve captive animals.

Question 13

True or false: An orca’s dorsal fin can collapse in the wild due to stress or injury.

Accepted Answer

False. Wild orcas rarely have collapsed dorsal fins (under 1%). Collapse in captivity is linked to warm air, inactivity, and gravity—not stress alone.

Question 14

True or false: Orcas are strictly ocean dwellers and cannot survive in freshwater.

Accepted Answer

False. Orcas have been documented swimming far up rivers like the Columbia and even into estuaries. They are not strictly marine and can tolerate freshwater for periods.

Question 15

True or false: Male orcas can live over 100 years in the wild.

Accepted Answer

False. Male orcas typically live 30–60 years; females can live 80–90 years. 100+ is false. The oldest known wild male was about 70.

Question 16

True or false: Female orcas go through menopause and can live decades after their last calf.

Accepted Answer

False. Actually, this one is true—female orcas do experience menopause and can live up to 90 years post-reproduction, similar to humans.

Orca (Killer Whale) Trivia Questions