The Caspian Sea is home to the endangered Caspian seal and six species of sturgeon, as well as hundreds of species of fish and invertebrates found nowhere else. According to the research ...

Climate and weather also influence the timing of seal breeding seasons. Many species coordinate mating to ensure that the birth of their young occurs during periods when conditions are most favorable ...

More specifically, the DNA still contained in the book binding allowed researchers to narrow their search to harbor and harp seal populations from Scandinavia, Scotland, Iceland and Greenland ...