If everyone on Earth sat in the ocean at once, how much would sea level rise?

Even if every human being on Earth went for a dip in the ocean at the same time, they’d be just a drop in the bucket compared to the size of the planet’s seas.

By: Tony E. Wong, Rochester Institute of Technology, The Conversation

Outlets: The Conversation

Published: March 29, 2026

Words: 895

Last Updated: 4 months ago

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By Tony E. Wong, Rochester Institute of Technology

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com.

If everyone on Earth sat down in the ocean, how far would the water rise? – Zahkaev and Viktor

Hypothetical questions, like what would happen if everyone on Earth went for an ocean swim at once, are fun …

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