There is still quite a bit of snow in the woods, but I decided to visit a couple of favorite vernal pools. One still had significant ice (6 inches or so), but at the edge of the second pool I found a very small open water area (like 8 cm x 15 cm). I took a few swipes at the mucky, leafy substrate and found some macroinvertebrates slowly swimming in the cold water. The coolest one was what looks like a small hellgrammite -- perhaps one centimeter in length. Looking forward to learning about the vernal pool activity this year in your part of New Hampshire.
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