Latest Scientific Research Publications

Contact Information for Ryan Johnson

Contact Marine Explorer Ryan Johnson

Media Enquiries:

  • Jo Sarsby Personal Management Ltd.
  • Email: jo@josarsby.com
  • Tel: + 44 117 973 8589

Ryan Johnson featured research projects

Ever since I was a kid, my mind, much to my parents annoyance, was never satisfied with things been just so. I always was intrigued to understand why things were just so. This curiosity, combined with my passion for the natural world, led inevitably to my career as a marine biologist. Over the past decade I have worked on studies attempting to illuminate the hidden would of sharks. Here is a selection of some of my favorites.

Research Projects

Featured Publications

  • Impact of shark-feeding tourism on surrounding fish populations off Moorea Island.
  • Coastal swimming patterns of white sharks (Carcharodon carcharias) at Mossel Bay, South Africa. Environmental Biology of Fishes.
  • Concordance of genetic and fin photo identification in the great white shark, Carcharodon carcharias, of Mossel Bay, South Africa. Marine Biology Published on-line first.
  • Encounters between white sharks and Cape fur seals in a shallow channel. Journal of the Marine Biological Association - Biodiversity Records, Published on-line.
  • White shark abundance: not a causative factor in numbers of shark bite incidents. In: Nel D.C. & Peschak T.P. (eds.): Finding a balance: white shark conservation and recreational safety in the inshore waters of Cape Town, South Africa - proceedings of a specialist workshop.
  • Finding a balance: white shark conservation and recreational safety in the inshore waters of Cape Town, South Africa - proceedings of a specialist workshop.
  • Seabird predation by white shark, Carcharodon carcharias, and Cape fur seal, Arctocephalus pusillus pusillus, at Dyer Island.
  • Is there a relationship between white shark presence and the management of city estuaries and river mouths?
  • Transoceanic migration, long-distance return migration and local movement patterns in the great white shark.
  • Habitat utilization of the white shark in South Africa, using acoustic telemetry. In Abstract of workshop: Conservation Research of Great White Sharks.
  • Behavioural ecology of the white shark (Carcharodon carcharias) at Dyer Island, South Africa.
  • Rodent induced damage to a pine plantation: a southern African case study.
  • The effect of afforestation fragmentation on small mammal assemblages at Groenvaly grasslands. Journal of Mammalogy.