كان ينتظر منذ عام 1960 عندما الستر هاردي، عالم الاحياء البحري قال:"اظن ان ما حدث ان اسلافنا ربما عاشو حياة مائية اكثر لبعض من الوقت"
It had been waiting there since 1960 when Alister Hardy, a marine biologist, said, "I think what happened, perhaps our ancestors had a more aquatic existence for some of the time."