General characteristics of a good article about marine mammals
I have added notes within each section that are specific to marine mammals
For species, the taxobox template might be: Taxobox template
Anatomy and morphology
editSometimes "Anatomy and physiology" or "Description". For whales, this often includes a description of their size. Diving adaptions, breathing, and thermoregulation might also be discussed here.
Ecology and behavior
editAlternately, this can be "Behaviour and life history" and can include the following sections ("Diet" and "Reproduction"). Social structure and vocalizations can be discussed here, as can intelligence. "Ecology" is frequently a separate section.
Diet
editFew of the existing marine mammal FAs or GAs include a separate section on diet - most seem to discuss it Behaviour or Ecology
Reproduction
editAgain, this seems to frequently be discussed as a subsection of Behaviour.
Etymology
editOnly included when there's something noteworthy to say about it. I'm actually surprised to see it so far down in the article outline - in my experience it's usually one of the first sections.
Taxonomy
editSubspecies
editAgain, I'm surprised to see this quite this far down in their recommended outline - it's usually one of the first sections in existing FAs and GAs.
Distribution
editSometimes included under "Ecology"
Conservation status
editExisting FAs and GAs often "Human relations"/"Interactions with humans"/"Relationships with humans" section. Things like hunting and conservation are often discussed here. In addition, subsections can include "Cultural depictions", "In captivity", "Zoos and aquariums" and "Whale watching".
References
editCategories should be defined near the end of the article.
Please include a direct parent category in the taxonomy whenever possible; for a species, the family is likely an available category. For a family, the order is probably available.
See the subcategories under Category:Animals); most of the subcategories listed there have lower-level subcategories that may fit better. Multiple categories may be relevant.