from my understanding a full grown 350kg bull sealion can swim to depths of 100 odd meters and maintain his fishing for up to about 12 minutes. the females are around 8minutes. Sealions often hunt between 80-120km offshore. hunting for 4 days and then returning to shore for 4 days rest. since the Ship cannot hunt in Sealion Feeding/hunting areas and the population of 13,000 ( yes almost extinct) stretches from Geraldton WA to Victor Harbor SA. this ship should there for be banned from WA to SA with in 120km of shore..