Editing Harp seal (section)

===Migration and vagrancy===
Harp seals are strongly [[wikt:migration|migratory]], the northwest population regularly moves up to {{convert|4000|km|mi}} northeast outside of the breeding season;<ref name=ronald>Ronald, K., & Healey, P. J. (1981). Harp Seal. Chapter 3 in Ridgeway, S. H., & Harrison, R. J., eds. ''Handbook of Marine Mammals'', vol. 2 ''Seals''. Academic Press, London.</ref> one individual was located off the north Norwegian coast, {{convert|4640|km|mi}} east northeast of its tagging location.<ref name=sergeant>{{cite journal|author=Sergeant, D.E. |title=Transatlantic migration of a Harp Seal, ''Pagophilus groenlandicus'' |journal=Journal of the Fisheries Research Board of Canada |volume=30 |pages=124–125 |doi=10.1139/f73-020|year=1973 }}</ref> Their navigational accuracy is high, with good eyesight an important factor.<ref name=ronald/><ref name=king>King, J. E. (2015). ''Seals of the World'', 2nd. ed. British Museum, London.</ref> They are occasionally found as [[vagrancy (biology)|vagrants]], south of their normal range. In [[Great Britain]], a total of 31 vagrants were recorded between 1800 and 1988.<ref name=corbet>{{cite book |editor-last=Corbet |editor-first=G. B. |editor-last2=Harris |editor-first2=S. |year=1991 |title=The Handbook of British Mammals |edition=3rd |publisher=Blackwell |location=Oxford |isbn=978-0632016914 }}</ref>

More recently, they reached [[Lindisfarne]] in [[Northumberland]] in September 1995,<ref name=nhsn>{{cite journal|author=Frankis, M. P.|author2=Davey, P. R.|author3=Anderson, G. Q. A.|name-list-style=amp |year=1997|title= Harp Seal: a new mammal for the Northumberland fauna|journal=Trans. Nat. Hist. Soc. Northumbria|volume=57|issue=4|pages=239–241}}</ref> and the [[Shetland Islands]] in 1987. The latter was linked to a mass movement of harp seals into Norwegian waters; by mid-February 1987, 24,000 were reported drowned in fishing nets and perhaps 30,000 (about 10% of the world population) had invaded [[fjord]]s as far south as [[Oslo]]. The animals were emaciated, likely due to commercial fishing causing competition for the seals' prey.<ref>{{cite journal |author=Anon |year=1987 |title=Harp Seals, Brunnich's Guillemots and White-billed Divers |journal=[[Twitching (magazine)|Twitching]] |volume= 1 |issue=3 |pages=58 }}</ref>

Harp seals can strand on Atlantic coasts, often in warmer months, due to dehydration and [[parasite load]].<ref>{{Cite web |url=http://nmlc.org/rehabilitation/rounds-notes/ |title=Rounds Notes {{!}} National Marine Life Center|website=nmlc.org|language=en-US|access-date=2018-04-10}}</ref> In March 2020, a harp seal was spotted near [[Salvo, North Carolina]].<ref>{{cite news |last1=Hampton |first1=Jeff |title=Two seals spotted on Outer Banks beaches |url=https://www.pilotonline.com/life/wildlife-nature/vp-nw-seal-sighting-20200327-yd3g4ttprrgj3elt5no3xpkahu-story.html |work=pilotonline.com |date=2020-03-27}}</ref> Harp seals often consume snow to stay hydrated, but in mild winters may not have enough available. Several centers are active in seal rescue and rehabilitation, including [[International Fund for Animal Welfare|IFAW]], [[National Oceanic and Atmospheric Administration|NOAA]], and the [[New England Aquarium]]. Harp seals are protected by the [[Marine Mammal Protection Act]] in the [[United States]].