Sea otters
This reading profile brings together 4 source-linked articles that reference sea otters.
Fauna does not yet have a full sourced identification profile for this name, so this page keeps the relevant reading together without inventing missing species detail.Source-linked reading
- Field guideWhy sea otters use toolsA hard object can act as a hammer, a portable chest anvil, or a fixed anvil, letting an otter pry loose or fracture prey that teeth and paws alone handle less efficiently. The behavior is flexible rather than compulsory, and it is especially associated with hard-shelled snails and bivalves.
- Field guideHow kelp forests support animalsHoldfasts, stipes, blades, and floating canopies add surfaces and shelter from seafloor to sea surface. Grazers consume kelp and epiphytes, detritus feeds animals inside and beyond the forest, and fish and invertebrates use the structure as nursery, feeding, and refuge habitat. Predators can indirectly protect kelp by limiting grazers in some regions.
- Field guideHow mammal fur insulatesHair itself is only part of the insulation. A dense, deep coat creates small air spaces that resist convective mixing and conduct heat poorly; guard hairs protect the softer layer, and piloerection or seasonal growth can change the coat's effective thickness.
- Field guideKeystone species and ecosystem engineersA keystone species has effects on community structure that are large relative to its abundance. An ecosystem engineer changes the physical environment in ways that alter resources for other organisms. The concepts overlap in beavers, but they are not synonyms.