Marlin: Marine Species ID & Life List
Ever spotted a fish, ray, or jellyfish while diving or snorkeling and wondered what it was? Marlin helps you identify marine life on the spot, learn more about it, and build your own personal life list of every species you encounter.
Spot it, look it up, and add it to your life list — built for everything that lives in the ocean.
WHAT YOU CAN DO
Identify species near you
See which marine species are commonly recorded near your current location, or anywhere you choose, powered by real observation data from the iNaturalist community.
Search and learn
Look up any marine species by name, or explore by classification, tapping through families and groups to discover related species. Each species page brings together photos, a range map, a seasonality chart, a Wikipedia summary, and IUCN Red List conservation status.
Build your life list
Log every sighting with notes, photos, and a precise location. Your life list keeps a running record of every species you've encountered, ready to revisit any time.
See your sightings on a map
"My Map" plots every sighting you've logged, color-coded by group (fish, sharks and rays, mollusks, jellyfish, marine mammals, and more), so you can see where and what you've found at a glance.
Make it yours
Choose a light, dark, or system theme, and set a manual location for logging sightings from a past trip.
PRIVACY BY DESIGN
Marlin doesn't ask you to create an account. There is no tracking, no analytics, and no advertising. Your life list, photos, and notes stay on your device, under your control, with manual export/import whenever you want it.
Whether you're a diver, snorkeler, beachcomber, or simply curious about what's living in the water near you, Marlin turns every encounter into something you can identify, learn from, and remember.
Anti-Features
This app has features you may not like. Learn more!
Versions
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.
Download F-Droid
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arm64-v8a
This version requires Android 7.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
access approximate location only in the foreground
This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
-
access precise location only in the foreground
This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
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com.marlinid.marlin.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
23 MiB
PGP Signature
|
Build Log
-
armeabi-v7a
This version requires Android 7.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
access approximate location only in the foreground
This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
-
access precise location only in the foreground
This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
com.marlinid.marlin.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
22 MiB
PGP Signature
|
Build Log
-
arm64-v8a
This version requires Android 7.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
access approximate location only in the foreground
This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
-
access precise location only in the foreground
This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
com.marlinid.marlin.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
23 MiB
PGP Signature
|
Build Log
-
armeabi-v7a
This version requires Android 7.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
access approximate location only in the foreground
This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
-
access precise location only in the foreground
This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
com.marlinid.marlin.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
22 MiB
PGP Signature
|
Build Log
-
arm64-v8a
This version requires Android 7.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
access approximate location only in the foreground
This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
-
access precise location only in the foreground
This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
com.marlinid.marlin.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
23 MiB
PGP Signature
|
Build Log
-
armeabi-v7a
This version requires Android 7.0 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
access approximate location only in the foreground
This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
-
access precise location only in the foreground
This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
-
com.marlinid.marlin.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Download APK
22 MiB
PGP Signature
|
Build Log
