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Der Seeigel - Das rund Stachel-Wunder
Seeigel haben fiese Stacheln und sind wohl auch deshalb Überlebenskünstler. Es gibt sie seit Urzeiten, sie leben in allen Weltmeeren. Dabei sind die Algenfresser wichtige Akteure im Ökosystem Küstengewässer. Autorin: Brigitte Kramer