Sentences with phrase «valuable blubber»

Fossil records show that northern elephant seals have been around for millions of years, yet by the end of the 19th century, experts say there were only about 100 seals left as a result of over-hunting by humans, who harvested the animals» valuable blubber in order to make oil.

Eubalaena glacialis, the North Atlantic right whale — so - called by 18th century whalers because it was easy to kill and rich in valuable blubber — is one of three right whale species.