How to identify seashells on Marco Island Love shelling in the rain. We shell RAIN or SHINE .Shelling in the rain has its advantages for sure . When the shells are wet they are much easier to see / identify . When shelling you should always look for color then shape .Shelling in the rain is just like shelling at the shore line but the difference is you don’t have to be fast to grab the shells nor get aggravated with the waves rolling in on you . In most cases the rain cools us off especially in