Biology

Sponges are an important animal for marine and freshwater ecology and represent a rich animal diversity found throughout the world, from tropical climates to the arctic poles. For evolutionary biologists, they also present an interesting animal for comparative study because they are simple filter feeders, and lack nervous, digestive or circulatory systems, suggesting that they diverged early from other animals.

Biology


A speculative life rendering of the fossil whale Balaenoptera bertae unearthed in the San Francisco Bay Area.

The whale belongs within the same genus as minke and fin whales, indicating... The pre-Ice Age marine mammal community of the North Pacific formed a strangely eclectic scene, research by a Geology PhD student at New Zealand's University of Otago reveals.




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