Sailing the ocean blue Two sailboats on the dark blue waters of the Caribbean Sea, near Sint Maarten, West Indies (more) Why Is The Ocean Blue? Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/science/Why-Is-The-Ocean-Blue Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback Our editors will review what you’ve submitted and determine whether to revise the article.

　　External Websites Ask the Chatbot a Question Written and fact-checked by The Editors of Encyclopaedia Britannica Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors. The Editors of Encyclopaedia Britannica Last Updated: Mar 4, 2025 • Article History Table of Contents Table of Contents Ask the Chatbot When sunlight hits the ocean, the different colors of the solar spectrum are either absorbed or scattered by water molecules and other particles. Water absorbs colors in the red part of the light spectrum and reflects the blue part, which is why we perceive the ocean as blue. The depth and clarity of the water also play a significant role in the ocean’s color. In clear ocean waters, the blue part of the light spectrum penetrates deeper than other colors, which are absorbed more quickly. This is why the ocean can appear to be a deeper blue in areas where ...(100 of 212 words)

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