Ključne besede: Nature at Your Door Frank Taylor, Hellgrammite, Dobsonfly, Dobson fly, Corydalus, Corydalus cornutus, Megalopteran, insect larva, aquatic insect larva, predator, top predator, aquatic predator, top invertebrate predator, stream insects, aquatic insects, nature, nature education, homeschool, nature teaches, outdoor education, stream wildlife, natural history, natural history education, biology education, aquatic ecology
Dolžina videa: 10:29