Conversation so far:
What are the different types of sharks?
Some types of Sharks. Great White Shark. Tiger Shark. Whale Shark. Bull Shark. Hammerhead Shark. Goblin Shark. Mako Shark. Blue Shark.
Are sharks endangered? If so, which species?
As a result, the oceanic whitetip, porbeagle, and the smooth hammerhead are classified as vulnerable by the IUCN, while scalloped and great hammerhead sharks are classified as endangered.
Tell me more about tiger sharks.
Tiger sharks are named for the dark, vertical stripes found mainly on juveniles. As these sharks mature, the lines begin to fade and almost disappear.

Question: What is the largest ever to have lived on Earth
Self-contained rewrite: What is the largest shark ever to have lived on Earth?