Sperm Whale
(Physeter macrocephalus)
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![Photo of a Sperm Whale](/static/species/speciesinfo/spermwhale/images/sperm_whale_johanna_vollenweider_noaa_team_necropsy.jpg)
A team of marine mammal experts perform a necropsy on a male sperm whale. The team collected the whale's teeth to determine age, blubber to check for contaminants, and a variety of tissue samples to enable future studies, and understand factors that contributed to the whale's death. Credit: NOAA Fisheries.