Sailors Are Fighting Back Against The Orcas Sinking Their Boats… And It’s Working

Summary

Since 2020, sailors have reported repeated encounters in which Iberian orcas approach boats, often targeting and damaging their rudders. The subtitles cite more than 250 affected boats, multiple rescues, and at least four vessels sunk. The behavior appears concentrated among a small group within the critically endangered Iberian orca population.

Researchers have proposed that the behavior may have spread through social learning. One theory is that an orca known as White Gladis changed her behavior after a traumatic encounter with a boat or fishing gear, and that younger whales copied her. The cause is unknown, however, and the video stresses that this remains a theory.

Scientists often describe the episodes as “interactions” rather than attacks. The behavior may be play or curiosity, but it can still put crews in danger by disabling their steering.

The video describes sailors’ evolving responses:

• Silent protocol: Stop the boat, lower the sails, turn off the engine, release the wheel, and stay quiet. The video says encounter data associate this approach with less damage, and that a still, quiet boat may become less interesting to the whales.
• Sand: Pouring sand into the water near the stern may briefly cloud the whales’ sonar picture and obscure the rudder. Some sailors report success, but its effectiveness is uncertain, and the cloud may disperse quickly.
• Reverse: Backing away under engine power may increase distance from the whales. Turbulence from the propeller near the rudder may also make the area less appealing or harder to assess. The video says Spain’s government supports this maneuver.
• Avoidance and information-sharing: Sailors use online groups and sighting reports to track encounters, avoid high-risk areas, and follow official seasonal warnings. The video presents avoiding an encounter as the most effective strategy.

Other attempts—including loud noises, firecrackers, and pouring fuel, oil, or urine into the water—were reported as ineffective. Loud noise may even worsen some encounters.

Overall, the response described is based on shared observations and trial and error, not a guaranteed solution. Encounters continue, but sailors now have more warnings, local knowledge, and practical guidance than they did in the early years.

Researchers and sources featured

• Researchers studying Iberian orcas and tracking boat encounters — not named in the subtitles
• An organization advising sailors — not named
• The Spanish government and its maritime and environmental agencies
• A former sailor who established a sighting-reporting website — not named
• Sailors’ online forums, Facebook groups, Telegram chats, and WhatsApp groups
• First-hand reports from sailors, including an unnamed charter captain who described using sand and reversing
• White Gladis, an orca discussed in the proposed explanation for how the behavior may have spread