Phylum Cnidaria Part 2: Class Hydrozoa

The video tutorial explores the phylum Cnidaria, focusing on the class Hydrozoa. It details the characteristics, reproduction, and biological immortality of hydras and the immortal jellyfish, Turritopsis dohrnii. The tutorial also covers colonial hydrozoans, such as Obelia and siphonophores, highlighting their unique structures and life cycles.

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