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SnakeCLEF 2021



Developing a robust system for identifying species of snakes from photographs is an important goal in biodiversity and global health. With over half a million victims of death and disability from venomous snakebite annually, understanding the global distribution of the >3700 species of snakes and differentiating species from images (particularly images of low quality) will significantly improve epidemiology data and treatment outcomes. The goals and usage of image-based snake identification are complementary with those of other challenges: classifying snake species in images, predicting the list of species that are the most likely to be observed at a given location, and eventually developing automated tools that can facilitate integration of changing taxonomies and new discoveries.

Data collection

783 classes and 245,185 images of snakes from around the world and taken with different devices and conditions.

Task description

Given the set of images and corresponding geographic locality information, the goal of the task will be to return for each image a ranked list of species sorted according to the likelihood that they are in the image and might have been observed at that location.

How to participate ?

A direct link to the related challenge on AIcrowd platform will be provided soon. In the mean time:

  1. Each participant has to register on AIcrowd ( with username, email and password. A representative team name should be used
    as username.
  2. In order to be compliant with the CLEF requirements, participants also have to fill in the following additional fields on their profile:
    • First name
    • Last name
    • Affiliation
    • Address
    • City
    • Country
  3. This information will not be publicly visible and will be exclusively used to contact you and to send the registration data to CLEF, which is the main organizer of all CLEF labs. Once set up, participants will have access to the dataset tab on the challenge's page. A LifeCLEF participant will be considered as registered for a task as soon as he/she has downloaded a file of the task's dataset via the dataset tab of the challenge.


The winner of each of the four LifeCLEF 2021 challenges will be offered a cloud credit grants of 5k USD as part of Microsoft's AI for earth program.