Playing Virtual Darts With Fish ID

A group of REEF surveyors in Mexico have set up a study group on “WhatsApp” (a mobile device chat app) to prepare themselves for REEF Level 2 tests in the Tropical Eastern Pacific (TEP) region. The group is coordinated by Itziar Aretxaga, who recently passed level 3 in that region and is a Level 5 expert in the Tropical Western Atlantic (TWA). Members of the group live throughout Mexico, but stay connected and learn together through a game of virtual darts on their mobile phones. Every day they are presented with a problem fish they have to solve, and at the end of the day the recognition card for the fish of day is sent with instructions of names in English and Spanish and features to look for.

Along with the daily mystery fish, the participants are playing a rolling game over the course of two months in which one participant “throws a dart” with a photograph to another participant to recognize. The recipient has a maximum of 24 hours to reply. If the recipient identifies the species, he/she receives 1 point. If the reply is incorrect, the recipient receives -1 point. If the sender misidentifies the species for one that is not in the study cards already seen, he/she receives -2 points. If anybody other than the recipient replies within the 24 hr period, he/she receives -2 points. If the recipient does not reply within 24 hours or replies incorrectly, the dart can be picked up by any participant, and points are assigned to the one that first replies with the correct answer. The score is normalized by the number of darts aimed at each participant and the final prize is a round of beers paid by the participant who scores less points.

The group has been playing fish-darts for three weeks now, and is having quite a blast with 35 cards already studied and almost 40 darts sent in the game. Negative points have been assigned mainly for misidentifications of photographs found with Google on the internet. In two weeks, when they complete the 50 species they have set for themselves to study, they will declare a winner and the person in charge of beers for all. ¡Salud!

Design by Joanne Kidd, development by Ben Weintraub