What is the biggest thing man has ever seen come out of ocean?

This is a bit of a tricky question! It depends on what we mean by "biggest" and "come out of the ocean."

Here are some possibilities:

* The largest creature ever: The blue whale is the largest animal that has ever lived, reaching lengths of up to 100 feet and weighing up to 200 tons. While they live in the ocean, they don't typically "come out" in the sense of leaving the water.

* The largest object: The biggest thing humans have pulled out of the ocean are likely oil rigs. These massive structures are built in the ocean, and then removed when they reach the end of their life cycle.

* The most impressive natural phenomenon: Tsunamis are huge waves that can travel thousands of miles across the ocean before crashing onto land, causing massive destruction. While they are a product of the ocean, they are not "things" that come out of it in the traditional sense.

Ultimately, there is no definitive answer to your question. It depends on what we define as "biggest" and how we interpret "come out of the ocean."