since the minimum size should be marked?
Hi Manolo RG,
As far as I know, the best browser for marking tiny organisms is Firefox; the tool appears smaller there than in other browsers so it doesn't obscure the animal.
I do mark even the most tiny ones as long as I can recognize them from marine snow. If it is too small to tell the category, then you can ignore it.
Just try your best and don't worry about possible mistakes. Each image is classified by multiple users 😃
Thanks for all your effort!