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Shark Research

For many years my primary passion has been conducting oceanographic and shark research on sharks, other marine species and ecosystems throughout Southern Africa. Here are some of the projects that I am most proud to have led or contributed to. To my fellow lovers of science, if you are developing a project and your collaborative team, and you believe my research expertise is compatible with your project, then lets connect.



  • Spatial and seasonal patterns in sighting rate and life-history composition of the white shark Carcharodon carcharias at Mossel Bay, South Africa
    Ryklief, Pistorius, Johnson (2014) – Download this publication
  • Fine scale movements and activity areas of white sharks (Carcharodon carcharias) in Mossel Bay, South Africa
    Jewell, Johnson, Gennari, Bester (2013) – Download this publication
  • Accuracy of Using Visual Identification of White Sharks to Estimate Residency Patterns.
    Delaney, Johnson, Bester, Gennari (2012) – Download this publication
  • Effects of Smart Position Only (SPOT) Tag Deployment on White Sharks Carcharodon carcharias in South Africa.
    Jewell, Wcisel, Gennari, Towner, Bester, Johnson, Singh (2011) – Download this publication
  • Distribution and abundance of humpback whales, Megaptera novaeangliae, off the coast of Mozambique.
    Findlay, Meyer, Elwen, Kotze, Johnson, Truter, Uamusse, Sitoe, Wilke, Kerwath, Swanson, Staverees, Van Derwesthuizen (2011) – Download this publication
  • Impact of shark-feeding tourism on surrounding fish populations off Moorea Island (French Polynesia).
    Vignon, Sasal, Johnson, Galzin (2009)
  • Coastal swimming patterns of white sharks (Carcharodon carcharias) at Mossel Bay, South Africa.
    Johnson, Bester, Dudley, Oosthuizen, Meÿer, Hancke, Gennari (2009) – Download this publication
  • Concordance of genetic and fin photo identification in the great white shark, (Carcharodon carcharias), of Mossel Bay, South Africa.
    Gubili, Johnson, Gennari, Oosthuizen, Kotze, Meÿer, Sims, Jones, Noble (2009) – Download this publication
  • Encounters between white sharks and Cape fur seals in a shallow channel.
    Johnson, Keswick, Bester, Oosthuizen (2008) – Download this publication
  • White shark abundance: not a causative factor in numbers of shark bite incidents.
    Kock, Johnson, Bester, Compagno, Cliff, Dudley, Gennari, Griffiths, Kotze, Laroche, Meyer, Oosthuizen, Swanson (2006) – Download this publication
  • Seabird predation by white shark, (Carcharodon carcharias), and Cape fur seal, (Arctocephalus pusillus pusillus), at Dyer Island.
    Johnson, Venter, Bester, Oosthuizen (2006) – Download this publication
  • Is there a relationship between white shark presence and the management of city estuaries and river mouths?
    Oelofse, Kock, Johnson, Haskins (2006) – Download this publication
  • South Africa’s White Shark cage-diving industry – is their cause for concern?
    Johnson, Kock, Bester, Compagno, Dudley, Griffiths, Keswick, Kotze, Laroche, Meyër, Oosthuizen, Swanson, Jacobs (2006) – Download this publication
  • Transoceanic migration, long-distance return migration and local movement patterns in the great white shark.
    Bonfil, Meyer, Scholl, Johnson, O´Brian, Oosthuizen, Swanson, Kotze, Patterson (2005) – Download this publication
    1996 – 2004
  • Habitat utilization of the white shark in South Africa, using acoustic telemetry.
    Johnson, Oosthuizen, Bester, Meyer, Swanson, Kotze (2004)
  • Behavioural ecology of the white shark (Carcharodon carcharias) at Dyer Island, South Africa.
    Johnson (2003)
  • Rodent induced damage to a pine plantation: a southern African case study.
    Ferguson, Van Jaarsveld, Johnson, Bredenkamp, Foord, Britz (2003)
  • The effect of afforestation fragmentation on small mammal assemblages at Groenvaly grasslands.
    Johnson, Ferguson, Van Jaarsveld, Chimimba, Bronner (2002)