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Orca Group SeriesIndependent ocean storytelling
Portrait of Renaud de Stephanis

Portrait: Orca Group Series interview still.

The person behind the conversation

Bio & achievements

Dr Renaud de Stephanis is president and coordinator of CIRCE. His work with cetaceans in the Strait of Gibraltar provides the background to a conversation about field observation, acoustics and Iberian orca interactions with boats.

  • President and coordinator of CIRCE
  • Field research on cetaceans in the Strait of Gibraltar

Meet the guest

Renaud de Stephanis

Why are Iberian orcas interacting with boats?

Renaud de Stephanis separates evidence from speculation about Iberian orcas, rudders, acoustics and coexistence.

The full interview will be linked here when released. Meanwhile, watch an available conversation.

Coming soon · release date to be announced

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Renaud de Stephanis: Why are Iberian orcas interacting with boats?

The full interview is not yet available to watch here. Follow the series for release updates.

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Evidence, behaviour and coexistence

Orcas and boat rudders

Why are Iberian orcas focusing on boat rudders? Renaud de Stephanis separates evidence from speculation and explains what fieldwork, behaviour, acoustics and coexistence can and cannot tell us.

In this full Orca Group Series conversation with Nick Long, Renaud discusses years of field observations, the attributed game hypothesis, rudder interactions, bluefin tuna hunting, passive acoustics and SofiaNet, satellite tagging, individual resilience and the limits of current evidence. The programme does not present a universal or proven motive and does not replace current official mariner guidance.