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Worms

This reading profile brings together 12 source-linked articles that reference worms.

Explore Fauna’s source-checked field guides and research articles covering worms, or search the species catalog below for individual species profiles.
Across Fauna

Source-linked reading

  1. Field guideHow earthworms shape soilEarthworms are ecosystem engineers because they move soil while feeding and tunneling. Their channels and casts create new physical structures and microbial hotspots, but the ecological result depends strongly on species and place.
  2. Field guideWatching fireflies responsiblyFireflies flash to find mates, which means the very lights and crowds that visitors bring can drown out their signals. Watching responsibly—shielding light, treading carefully, and keeping habitats dark—lets you enjoy one of nature's great summer displays without harming the beetles whose numbers are already under pressure.
  3. Field guideFollowing tidal wildlife rhythmsPlan observations by predicted high or low water and rising or falling phase, record actual conditions and habitat exposure, compare equal windows relative to tide, and add lunar spring-neap stage and weather.
  4. 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.
  5. Field guideFood webs and trophic levelsA food chain is one pathway through a feeding network; a food web joins many such pathways. Trophic levels summarize distance from primary production, but omnivores, detritus, changing diets, and cross-habitat subsidies make real organisms harder to place than a simple pyramid suggests.
  6. Field guideHow insect metamorphosis worksMetamorphosis is not one butterfly trick. Insects follow several developmental patterns, and the immature stage may live in a different habitat, eat different food, or resemble the adult to very different degrees.
  7. Field guideHow seabirds handle saltKidneys alone cannot efficiently excrete all the salt gained from seawater and marine prey while conserving water. Nasal salt glands actively move ions into a secretion saltier than blood; ducts carry it to the nostrils, where droplets run or are shaken from the bill.
  8. Field guideHow sharks sense electric fieldsSharks sample tiny voltage differences through the ampullae of Lorenzini. Arrays of surface pores connect to sensory chambers, letting the nervous system compare signals across space and distinguish external fields from some self-generated activity.
  9. Field guideIndicator species explainedAn indicator species is monitored because a defined attribute—presence, abundance, chemistry, condition, or reproduction—has an established relationship with an environmental question. Its meaning depends on the stressor, place, timescale, sampling method, and supporting evidence.
  10. Field guideReading an estuaryEstuaries are partly enclosed waters influenced by coastal water and freshwater. Their depth, exposed area, currents, salinity, and wildlife access shift with tides, river flow, weather, and season.
  11. Field guideTidepooling without harmLow tide opens a temporary window into the intertidal zone. The best visit is timed conservatively, made from stable bare ground, and leaves every organism in its exact place.
  12. 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.