Humpback whales are baleen whales that have a flat or horizontal whale. They could move their tail up and down to move underwater. We also know these whales for being one of the most acrobatic whales, and it is their tail that helps them breach the

Blue whales possess tails, which enable them to swim and control their movements underwater. A blue whale tail is straight and has a split at the end in two robbery lobes, known as flukes. Their tail assists blue whales in propelling their long and slender body underwater. 

Killer whales have more than one fin. In fact, they have four fins in total – two pectoral fins, a tail (or caudal fin), and the most important fin named the dorsal fin. Together, these fins help balance the whale in the water and allow it to keep moving forward. 

Dorsal fins assist fishes in rolling, taking turns, and stopping underwater. Dorsal fins are composed of connecting tissues devoid of any bone or cartilage. We can categorize dorsal fins into six types:
Single
Pointed
Split
Spine Triangular
Trigger
Trailing

Gray whales are migratory whales who also happen to be baleen creatures. Blue whales are baleen whales, but they are not considered migratory birds, although they move between summer and winter feeding grounds. Apart from their appearance, there are several differences between the two whale species. Needless to say, there are certain similarities as well.

Although it might sound very unusual, a whale and a giant squid may indulge in a fight deep in the heart of the marine world. These two animals are vastly different from each other in every common respect. A whale is a vertebrate and giant mammal, while a squid is a cephalopod, an invertebrate closely related to the octopus.

Whales eat plankton, but not all of them. Toothed whales can bite and chew their prey and as such, they feed on fish, squid, crabs, and octopuses among other animals. On the other hand, baleen creatures like the right whale, humpback whale, and blue whale prefer consuming plankton, which is easily found in the ocean.

False killer whales have such a name owing to the shape of their skull, which resembles the skull of killer whales. However, the false killer whales are not deeply studied as killer whales and experts are yet to learn about them fully. Both these are mammals and belong to the dolphin family. 

Whales communicate via a variety of sounds. To be precise, according to experts, whales interact via a complicated range of noises, such as whistling, chirping, clicking, and so on. All these are collectively known as whale sounds.  Whales, however, lack a vocal cord and make sounds by squeezing air through the throat.