A dolphin is also known as a porpoise. A white whale is usually a Beluga whale.
Because dolphins has a blow-hole to sprout water and breathe like a whale while a whale is bigger in size and it can't do tricks like dolphin
It is a member of Dolphin family (Delphinidae),which is a part of the bigger Whale Species group.So,every Dolphin(including Killer Whales,or Orcas) are necessarily a part of Whale species (but the...
A dolphinThe Killer Whale is the largest of the dolphin family, renowned as an apex predator.
Killer whales are actually dolphins. They are the largest member of the dolphin family and are commonly referred to as orcas.