Friday, September 20, 2019

Mammalian Predators


At Zealandia, there is a predator-proof fence, designed to keep mammalian predators out. These include obvious targets like mustelids (weasels, stoats and ferrets), cats, rats and mice; and also less obvious introduced mammals such as hedgehogs, rabbits and hares, which may not be thought of as dangerous to native fauna, but may destroy eggs, or, crucially, out-compete natives for food resources.

But there is another class of mammalian predator which has been seen more and more frequently around Wellington…and this is one that we’re more than happy to welcome. They’re aquatic predators, and fall into two groups: cetaceans (whales and dolphins) and pinnipeds (seals and sealions).

Fur seal
In recent times we’ve had the visit by Matariki, the Wellington whale – a Southern Right whale who delighted us all in July last year. A pod of bottlenose dolphins was seen in Evans Bay in January. And this month, three orca, believed to be a mother, juvenile and baby came into the harbour near Eastbourne, then crossed over and were spotted very close to the shore at Karaka Bay and Scorching Bay.




Orca came in close to the shore

Orca have a distinctive dorsal fin

Whilst fur seals colonise the Red Rocks each year between May and October, some individuals have been spotted away from their colony. In particular, one individual has been sunning itself on the rocks of Karaka Bay and Breaker Bay since May this year. More recently, a leopard seal was seen in Oriental Bay, and a juvenile individual has been relaxing on the sands at Owhiro Bay for the last two days.  


Don't get too close to those teeth

Leopard seals are apex predators.


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