https://www.canada.ca/en/environment-climate-change/services/species-risk-public-registry/cosewic-assessments-status-reports/sea-otter-2007/chapter-3.html
The sea otter, Enhydra lutris, is the smallest marine mammal and the only member of the family Mustelidae to carry out all aspects of its life in the ocean....
sea otterenhydra lutrisstatus reportcosewicassessment
https://www.usgs.gov/media/images/emaciation-serous-atrophy-fat-a-northern-sea-otter-enhydra-lutris
Figure 1. Photomicrographs from a Northern Sea Otter (Enhydra lutris) found dead on a beach in Alaska, USA. (A) Lymph node. Germinal centers are depleted....
northern seaemaciationserousatrophyfat