Tag Archives: Pottsville

a beach somewhere…

The beaches near and not too far from us are so full of life, and not just human life (although there’s a lot of that). The ‘beachscape’ is always changing shape, carried away and built up again with the wild winds and shifting tides.

This weekend, on a visit to Byron Bay, the beach was back. Where not so long ago it was a strip of sand, now it stretches far and wide.

Copyright: Louise Ralph

dusk settles on another absolutely perfect day at Byron Bay…

And on another beach wander closer to home, the shoreline at Pottsville beach is littered with pumice stone. Queensland University of Technology’s pumice expert Dr Scott Bryan explained the mystery to Sydney Morning Herald columnist Tim the Yowie Man:

‘ “It’s the result of the July 2012 eruption of the Havre Seamount, which is about 1000 kilometres north of Auckland”… the underwater volcano spewed out a ”raft of pumice estimated to be more than 20,000 square kilometres in size”. That’s a surface area bigger than Belgium.’ (SMH, 10 January 2014)

A closer look at the ‘moving’ volcanic stones littering our beach reveals that marine creatures have hitched a ride on the pumice. Sometimes they are welcome, like coral-building species, and sometimes they are invasive species.

Copyright: Louise Ralph

mysterious creatures hitch rides on the pumice stone to seed or invade the oceans

There is something magical about wandering along a beach somewhere. Something that feeds your soul, connects you to the power and mystery of nature, and keeps drawing you back time and again.

Copyright: Louise Ralph

Sand squiggles or aerial views? It depends on your perspective…

Shearwaters blown away on epic migratory journey

Copyright: Louise Ralph

As we walk along Pottsville beach, it’s shocking to see the pristine sand dotted with dead seabirds. Already the wind has swept a soft layer of sand across their emaciated bodies…

Other beachgoers are curious but keeping their distance. What are they? Have they been poisoned? Is it the dreaded bird flu that’s killed them?

Copyright: Louise RalphI know it’s common for migratory birds to be blown off course or die of exhaustion, but I’ve never seen so many littering the beach. It just feels wrong to see such intense effort end like this.

A closer look reveals these are short-tailed shearwaters, similar or possibly the same as those we saw on a recent trip to Bruny Island in Tasmania.

Every year, these valiant world travellers make marathon migratory journeys from Alaska, Siberia and other distant shores to breed from September to April in colonies along Australia’s southeast coastline.

Along the way, shearwaters ‘raft-up’ at sea to rest and feast on fish and other tasty seafood like krill, squid, plankton, crustaceans and molluscs. But keeping up the carbs for their epic journey is a feat in itself.

By the time they reach Australia’s east coast, often flying in 6,000 kilometre stages, they have lost up to half their body weight and are in need of some serious rest and rejuvenation.

Imagine an 80kg human running 16 million kilometres non-stop, and you have some idea of the distance these birds have travelled compared to their body weight.

Like all migratory creatures, they are driven to continue their journey. And every year, emaciated and too exhausted to feed or take flight again, many are washed up along our beaches.

This year, the start of spring may as well have been the beginning of summer here, with unseasonal hot, dry winds fanning sparks into wildfires in eastern Australia. The shearwaters would have hit those relentless hot winds head on…

It’s sad to see their bodies strewn along the beach. But it’s comforting to know that many of them have already reached their destination and are taking some well-earned R&R before they kick into some serious breeding and baby shearwater rearing…

Copyright: Louise Ralph

Shearwaters near Bruny Island in Tasmania