Spongilla lacustris is a species of sponge of the freshwater sponge family Spongillidae that lives in fresh water rivers and lakes. Its name signifies its preference for lakes. It often grows under logs or rocks. It ranges from North America to Europe and Asia. It is the most common freshwater sponge in central europe. It is the most widespread sponge in Britain (especially the North), and the most common in lakes and one of the most common in canals. They have the capability to reproduce both asexually and sexually. They become dormant during winter. It's growth form ranges from encrusting to digitate to branched depending upon the quality of the habitat.
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