The mysterious wounds found on one of the world’s oldest orcas have triggered an investigation in Spain and raised questions about whether someone took aim at the famed killer whale amid years of tense encounters between orcas and boats.

Toñi, the oldest known Iberian orca, surfaced in the Strait of Gibraltar with multiple fresh marks across her dorsal fin and back that conservationists believe were caused by shotgun pellets. The injuries were not visible in photographs taken just weeks earlier.

The orca, known as Toñi, was spotted this week with marks Spanish officials described as compatible with possible pellet shots, according to Spain’s…

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