Increased occurrence of the jellyfish Periphylla periphylla in the European high Arctic


The jellyfish Periphylla periphylla, which can have strong ecological impacts on its environment, is ubiquitous in the Norwegian Sea and its range was predicted to extend northwards. The occurrence of P. periphylla in the northern Barents Sea increased since 2014 and, for the first time, several individuals were collected within a high Arctic fjord (> 78°N) in western Spitsbergen in January 2017. The low solar irradiance prevailing during the polar night and an increased inflow of relatively warm Atlantic water in the European Arctic since the last decade likely provide suitable conditions for the medusa to colonize Svalbard’s fjords during the winter months. However, light avoidance constrains the photophobic P. periphylla to deeper offshore areas during the midnight sun period. The current occurrence of P. periphylla in high Arctic fjords during the polar night will have a limited impact on marine ecosystems in the short term, but long-term effects are more uncertain if its abundance continues to increase.

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  1. Aksnes DL, Dupont N, Staby A, Fiksen Ø, Kaartvedt S, Aure J (2009) Coastal water darkening and implications for mesopelagic regime shifts in Norwegian fjords. Mar Ecol Prog Ser 387:39–49.

    CAS  Article  Google Scholar 

  2. Arai MN (1997) A functional biology of Scyphozoa. Chapman & Hall, London

    Google Scholar 

  3. Berge J, Johnsen G, Nilsen F, Gulliksen B, Slagstad D (2005) Ocean temperature oscillations enable reappearance of blue mussels Mytilus edulis in Svalbard after a 1000 year absence. Mar Ecol Prog Ser 303:167–175

    Article  Google Scholar 

  4. Berge J, Heggland K, Lønne OJ et al (2015) First records of Atlantic Mackerel (Scomber scombrus) from the Svalbard Archipelago, Norway, with possible explanations for the extension of its distribution. Arctic 68:54–61.

    Article  Google Scholar 

  5. Bozman A, Titelman J, Kaartvedt S, Eiane K, Aksnes DL (2017) Jellyfish distribute vertically according to irradiance. J Plankton Res 39:280–289.

    Article  PubMed  PubMed Central  Google Scholar 

  6. Cottier F, Tverberg V, Inall M, Svendsen H, Nilsen F, Griffiths C (2005) Water mass modification in an Arctic fjord through cross-shelf exchange: the seasonal hydrography of Kongsfjorden, Svalbard. J Geophys Res 110:C12005.

    Article  Google Scholar 

  7. Cottier FR, Nilsen F, Inall ME, Gerland S, Tverberg V, Svendsen H (2007) Wintertime warming of an Arctic shelf in response to large-scale atmospheric circulation. Geophys Res Lett 34:L10607.

    Article  Google Scholar 

  8. Dalpadado P, Ellertsen B, Melle W, Skjoldal HR (1998) Summer distribution patterns and biomass estimates of macrozooplankton and micronekton in the Nordic Seas. Sarsia 83:103–116.

    Article  Google Scholar 

  9. Dupont N, Aksnes DL (2010) Simulation of optically conditioned retention and mass occurrences of Periphylla periphylla. J Plankton Res 32:773–783.

    Article  PubMed  PubMed Central  Google Scholar 

  10. Fosså JH (1992) Mass occurrence of Periphylla periphylla (Scyphozoa, Coronatae) in a Norwegian fjord. Sarsia 77:237–251.

    Article  Google Scholar 

  11. Gjøsæter H, Wiebe PH, Knutsen T, Ingvaldsen RB (2017) Evidence of diel vertical migration of mesopelagic sound-scattering organisms in the Arctic. Front Mar Sci 4:1–14.

    Article  Google Scholar 

  12. Gulliksen B, Svensen E (2004) Svalbard and life in polar oceans. Kom forlag, Kristiansund

    Google Scholar 

  13. Hurvich CM, Tsai CL (1993) A corrected Akaike information criterion for vector autoregressive model selection. J Time Ser Anal 14:271–279.

    Article  Google Scholar 

  14. Jarms G, Tiemann H, Båmstedt U (2002) Development and biology of Periphylla periphylla (Scyphozoa: Coronatae) in a Norwegian fjord. Mar Biol 141:647–657.

    Article  Google Scholar 

  15. Johannesen E, Mørk HL, Korsbrekke K, et al. (2017) Arctic fishes in the Barents Sea 2004–2015: Changes in abundance and distribution, IMR/PINRO Joint Report Series, No. 1/2017

  16. Kaartvedt S, Klevjer TA, Torgersen T, Sørnes TA, Røstad A (2007) Diel vertical migration of individual jellyfish (Periphylla periphylla). Limn Oceanogr 52:975–983.

    Article  Google Scholar 

  17. Kaartvedt S, Ugland KI, Klevjer TA, Røstad A, Titelman J, Solberg I (2015) Social behaviour in mesopelagic jellyfish. Sci Rep 5:1–8.

    Article  Google Scholar 

  18. Larson RJ (1986) Pelagic scyphomedusae (Scyphozoa: Coronatae and Semaeostomeae) of the Southern Ocean. Biology of the Antarctic Seas XVI. Antarct Res Ser 41:59–165

    Article  Google Scholar 

  19. Lucas CH, Reed AJ (2010) Gonad morphology and gametogenesis in the deep-sea jellyfish Atolla wyvillei and Periphylla periphylla (Scyphozoa: Coronatae) collected from Cape Hatteras and the Gulf of Mexico. J Mar Biol Assoc UK 90:1095–1104.

    Article  Google Scholar 

  20. Moriarty P, Andrews K, Harvey C, Kawase M (2012) Vertical and horizontal movement patterns of scyphozoan jellyfish in a fjord-like estuary. Mar Ecol Prog Ser 455:1–12.

    Article  Google Scholar 

  21. Palerud R, Gulliksen B, Brattegard T, Sneli JA, Vader W (2004) The marine macro-organisms in Svalbard waters. In: Presterud P, Strøm H, Goldman HV (eds) A catalogue of the terrestrial and marine animals of Svalbard, vol 201, 1st edn. Norsk Polarinstitutt Skrifter, Tromsø, pp 5–56

    Google Scholar 

  22. Prozorkevich D, Sunnanå K (2017) Survey report from the joint Norwegian/Russian ecosystem survey in the Barents Sea and adjacent waters, August–October 2016, IMR/PINRO Joint Report Series, No. 1/2017

  23. Raskoff KA, Purcell JE, Hopcroft RR (2005) Gelatinous zooplankton of the Arctic Ocean: in situ observations under the ice. Polar Biol 28:207–217.

    Article  Google Scholar 

  24. Renaud PE, Berge J, Varpe Ø, Lønne OJ, Nahrgang J, Ottesen C, Hallanger I (2012) Is the poleward expansion by Atlantic cod and haddock threatening native polar cod, Boreogadus saida? Polar Biol 35:401–412.

    Article  Google Scholar 

  25. Sørnes TA, Aksnes DL, Båmstedt U, Youngbluth MJ (2007) Causes for mass occurrences of the jellyfish Periphylla periphylla: a hypothesis that involves optically conditioned retention. J Plankton Res 29:157–167.

    Article  Google Scholar 

  26. Sørnes TA, Hosia A, Båmstedt U, Aksnes DL (2008) Swimming and feeding in Periphylla periphylla (Scyphozoa, Coronatae). Mar Biol 153:653–659.

    Article  PubMed  Google Scholar 

  27. Tiller RG, Borgersen ÅL, Knutsen Ø et al (2017) Coming soon to a fjord near you: future jellyfish scenarios in a changing climate. Coast Manag 45:1–23.

    Article  Google Scholar 

  28. Willis KJ, Cottier FR, Kwaśniewski S (2008) Impact of warm water advection on the winter zooplankton community in an Arctic fjord. Polar Biol 31:475–481.

    Article  Google Scholar 

  29. Youngbluth MJ, Båmstedt U (2001) Distribution, abundance, behavior and metabolism of Periphylla periphylla, a mesopelagic coronate medusa in a Norwegian fjord. Hydrobiologia 451:321–333.

    Article  Google Scholar 

  30. Zelickman EA (1972) Distribution and ecology of the pelagic hydromedusae, siphonophores and ctenophores of the Barents Sea, based on perennial plankton collections. Mar Biol 17:256–264.

    Article  Google Scholar 

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Pedro de la Torre and Daniel Vogedes provided logistic supports. Elena Eriksen provided valuable information regarding IMR samples. Bodil Bluhm, Marine Cusa, Néstor Santana Hernandez, Janne Søreide, and Malin Daase contributed to sampling in 2017. Calum Bachell, Dora Marie Alvsvåg, Øystein Sture, Kertu Liis Krigul, Jonathan Björklund contributed to fieldwork in January 2017 through the University Center in Svalbard course AB334/834. A particular thanks to Colin Griffiths for overseeing the collection of mooring data in Kongsfjorden since 2002.


The study was co-funded by two projects supported by the Research Council of Norway (NFR): Arctic ABC (#244319) and AMOS (#223254), and by the Norwegian Biodiversity Information Centre project GooseAlien (#47-15-70184235). The mooring work was supported by the UK Natural Environment Research Council Oceans 2025 and Northern Sea Program with further support from NFR projects Circa (#214271), Cleopatra (#178766), Cleopatra II (#216537), and Marine Night (#226471). TJL acknowledges funding through the MARmaED project that received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 675997. This study is a contribution towards the ARCTOS research network (, the Arctic Science Partnership (, and the Ocean Frontier Institute funded through Canada’s First Research Excellence Fund. The results of this publication reflect only the authors’ view and funding agencies are not responsible for any use that may be made of the information it contains.

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Correspondence to Maxime Geoffroy.

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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. This study was carried out with permission from the Governor on Svalbard and followed the strict regulations regarding health, environment and safety enforced at UNIS and UiT.

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Geoffroy, M., Berge, J., Majaneva, S. et al. Increased occurrence of the jellyfish Periphylla periphylla in the European high Arctic. Polar Biol 41, 2615–2619 (2018).

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  • Helmet jellyfish
  • Polar night
  • Arctic Ocean
  • Barents Sea
  • Svalbard
  • Borealization