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Help identify and count spider crabs and their predators on underwater timelapse images

Spider Crab Watch

We have got three workflows for you to explore: 
- "Crabtastic" - help us determine what our claw-some friends are up to! Can you spot any spider crabs? Do any have devices on their backs? What kind of crabs are there?
- "What else is there?" - help us document other marine life. What species are around during this time of year, when spider crabs are around, and when they are not?  
- "What about us?" - humans love to interact with this amazing species and human activity might vary when spider crabs are around compared to when they are not. Can you spot any humans or signs of activity?


**** start June 2024 update: we're almost there! Thanks to your help, the "What else is there" workflow is COMPLETE! That's great news. The one is remains, "What about us?" consists of quick and easy tasks (and you'll be just as likely to see spider crabs and other marine life as for the other workflows as the photos are the same; what differs are simply the questions). Thank you for your work!

**** mid August 2023 update: thanks to your hard work, the "Crabtastic workflow" is now COMPLETE. Thank you so much to those who participated! If you're keen to join in, please check out the "What about us?" workflow (focused on human activity) and the "What else is there?" workflow (focused on other marine life, like fishes and invertebrates). You'll be just as likely to see pictures with spider crabs in them, but you'll just get questions focused on other aspects in the environment :)