As the world marks International Seal Day on Saturday, the Two Oceans Aquarium and the City of Cape Town have teamed up to ensure residents know what to do when they encounter a seal in distress.

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A distinctive trait to differentiate the two is whether they have visible ears. ‘Earless’ seals (Phocidae) do not have external ear flaps. However, ‘eared seals’ (Otariidae), such as sea lions, do.