The closest living relative to the blue whale among the land dwelling animals is the Hippo. There is an article with fairly simple language and good graphical support here http://nationalzoo.si.edu/Animals/AfricanSavanna/News/hipposandwhales.cfm No whale, dolphin, fish,(etc.) has a relative on land. You may want to visit answersingenesis.org
All cetaceans, marine mammals, are relatives of one another in some way. There are different families though, the most obvious being whales, dolphins and porpoises. Blue whales are in the whale family, therefore related to other whales. The blue whales closest realative in said family are all other baleen whales.
No not all of them some live on the other side of the world. But the ones that are in groups are usully family.
Whales are from the cetacean clade which involves dolphins. Many say the closest relative to the whale are hippos
The Hippopotamuses
a seal
The Bengal tiger is the tiger that is the closest living relative of the Amur tiger.
The walrus is the closest living relative to the manatee.
warthogs
dogs
The Okapi is the closest living relative to the giraffe however other species may be included in the formation but they are yet to be discovered.
Birds are the closest living relatives of spinosaurus and all past dinosaurs.
toads
The dragonfly's closest relative is the damselfly. === === === ===
no megalodons are a marine predatory creature and their closest relative is the great white shark
A scallop
megalodon
The evidence that favours the coelacanth as the closest living relative of amphibians is their resemblance with the lungfish. They seem to share similar genes in most aspects.Ê