Built for the reef
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Browse fish by easy-to-recognize groups.
Identify a Fish
Answer what you remember, one step at a time. Skip anything you're unsure about.
My List
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Your life list starts here.
Explore marine life and add your first species.
Notes you've kept
A few extras you chose to remember — nothing official, just yours.
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When you add a little extra on a fish you've seen, it will show up here.
Places
Explore locations by checklists and species recorded there.
Settings
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About this setting
When this is on, Lookdown may include independent species sightings you already recorded and ones you add later in research datasets shared with scientists and conservation partners. We do not share your email, username, or account ID. This is not the same as a public profile. Turning this off leaves your sightings in your account but excludes them from future research exports.
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Photo Credits
Lookdown is made possible in part by photographers who share their work and help document marine life around the world. We are grateful for their contributions.
Questions about a photograph? Use Send Us Feedback and choose Photography / copyright concern. Lookdown reviews disputes individually and does not automatically concede or reject claims.
Fish ID Basics
Five things to look at when you see a fish.
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Built for the reef
This is a placeholder destination for a Lookdown business-partner slot. A dive-gear partner would land here.
Lookdown
Marine life identification & life listing
Discover more beneath the surface.
To bring the world’s marine-life knowledge together - For those exploring it.
Vast quantities of knowledge about marine life exist - But, for the people encountering it underwater, that knowledge is scattered across field guides, regional apps, research databases, conservation organizations, photographers, and local experts.
Lookdown is being built to bring that experience together.
A global marine-life platform for divers and snorkelers. Built around identification, exploration, and discovery. Explore the species around you, identify what you encounter, keep a record of what you’ve seen, and carry that history with you wherever you dive next.
Lookdown is not meant to recreate work that already exists. It’s about connecting it - bringing together the knowledge and work of researchers, photographers, conservation organizations, regional experts, dive operators, and the diving community.
Identification is the beginning.
A simple question - “What was that?” - can lead to curiosity, learning, and a deeper connection with the places we explore.
Lookdown is starting with fish, but the vision is broader: a global companion for exploring marine life.
One that becomes more useful as you travel, dive, learn, and contribute - while connecting you with the people and projects working to understand and protect what you find.
Discover. Identify. Connect.
Accolades
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Explore Destinations
Discover places to dive and the people who can take you there.
Regions
The Greater Caribbean fish guide is available now in Lookdown. Downloadable regional guides you can use without an internet connection are planned.
How packs work
Explore the Greater Caribbean guide in Lookdown today. Downloadable regional guides for offline use are coming next. Your life list stays with you across regions.
Checklist
Record what you saw, where you saw it, and how many.