Ocean Photographer of the Year 2026, THEGUI6 - Oceanographic

Subscribe today from as little as £2 / $2.70 a month! Find out more

Subscribe from £2 / $2.70 a month! Find out more

  • News
  • Stories
  • Videos
  • Podcast
  • Events
  • Storyteller in Residence
  • Ocean Photographer of the Year
  • Shop
  • LOG IN
  • Search
Digital bookshelf
Oceanographic Logo
  • Conservation
  • Adventure
  • Exploration
  • Log In
  • Subscribe
  • News & stories
    • News
    • Stories
    • Storyteller in residence
  • Videos
  • Podcast
  • Events
  • Shop
  • Ocean Photographer of the Year

Winners Gallery

<< Back to WINNERS GALLERY
  • Previews
  • 01
  • 02
  • 03
  • 04
  • 05
  • 06
  • 07
  • 08
  • 09
  • 10
  • 11
  • 12
  • Next

Finalist Conservation (Impact) Photographer of the Year

Théo Guillaume Motu Tapu, French Polynesia

17°01'24.9"S 149°35'29.2"W

Inside this unhatched green sea turtle egg lies an embryo that died during its development. On Tetiaroa Atoll, researchers examine turtle nests and look carefully at unhatched eggs to understand survival rates and threats facing turtles. This hidden view reveals how rising sand temperatures caused by climate change can affect developing embryos, providing important evidence for protecting future generations.

BEHIND THE LENS

Ocean Photographer of the Year 2026, THEGUI6

Théo Guillaume France

  • Follow Théo On Instagram

ABOUT THE IMAGE

  • Taken on the shore
  • Accessed on foot
  • SONY A7IV + SONY 90MM MACRO
  • ISO : 800 , F-stop : F5.0 , Shutter Speed: 1/2000

Théo is a marine biologist and photographer from Avize, France, whose fascination with the ocean began during childhood trips to Mauritius and Martinique. He holds a double master’s degree in oceanography and marine biology and is now based in French Polynesia, where he works on conservation projects such as sea turtle monitoring, shark tagging, and coral restoration. Théo documents these efforts through photography and is developing a documentary series on Polynesian reef fish. Whether diving or freediving, he spends most of his time in the water, using visual storytelling to share the beauty and fragility of marine life.

MORE IMAGES BY Théo Guillaume

Conservation (Hope)Photographer of the Year

2026 Tahiti, French Polynesia

Ocean Photographer of the Year 2026, THEGUI

YoungPhotographer of the Year

2025 French Polynesia

Ocean Photographer of the Year 2025, THEGUI26

Newsletter

Receive the latest from Oceanographic and get 10% off your first order.

footer Photographer logo
  • Home page
  • OPY
  • Stories
  • Magazine
  • Contact us
  • Sitemap
  • Shop
  • News
  • Faqs
  • Legal
  • Read for free
  • Stockists

Copyright © 2026 CXD MEDIA LTD.

All rights reserved

10% off your first order!

Enjoy 10% off your first order with Oceanographic.

Choose from subscriptions, print magazines, books & photography prints – or bundle them together!

Use code WelcomeAboard10 at checkout.

Get 10% off