Sperm whales blow bubbles to achieve restful, vertical sleep
16
votes
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Study finds sperm whales help each other give birth
18 votes -
Sperm may pass traits via RNA, influenced by the father's life
42 votes -
Exploring the mysterious alphabet of sperm whales
10 votes -
Scientists are concerned by falling sperm counts and declining egg quality. Endocrine-disrupting chemicals may be the problem.
12 votes