Crayweed, a type of seaweed, forms dense forests on shallow reefs all the way from Port Macquarie to Tasmania. However, there is a 70 km gap in crayweed off the coast of Sydney. Sometime during the 1980s, crayweed disappeared completely between Palm Beach and Cronulla, likely due to the poorly treated sewage that used to be pumped directly onto Sydney’s beaches. However, despite Sydney's water quality improving dramatically since the establishment of the deep ocean sewage outfalls, the crayweed forests have not returned.
Ziggy Marzinelli leads the crayweed restoration research at the University of Sydney and the Sydney Institute of Marine Science, and is part of Operation Crayweed, a concerted effort to restore Sydney's underwater crayweed forests. One of the places they are working is Cabbage Tree Bay near Manly, and have enlisted the help of ocean swimming group with Bold and the Beautiful (stay tuned for a podcast with them very soon).
Image from Patagonia AUS & NZ, who are also working with Operation Crayweed.
Songs in this episode - all licensed under a Creative Commons License:
- Seaweed Smoothie - oever
- Underwater - 10GRI
- Underwater - michachaney
- Underwater - Unusual Narwhal
- Sapphire - Tobu
Popular Podcasts
Dateline NBC
Current and classic episodes, featuring compelling true-crime mysteries, powerful documentaries and in-depth investigations.
Crime Junkie
If you can never get enough true crime... Congratulations, you’ve found your people.
Stuff You Should Know
If you've ever wanted to know about champagne, satanism, the Stonewall Uprising, chaos theory, LSD, El Nino, true crime and Rosa Parks then look no further. Josh and Chuck have you covered.