Great swim today.
Here is Stella on her first swim 
You have heard of a baker’s dozen – this is a baker’s wave.
the 630 swimmers were very fast today 
FFF are hard to capture with normal film 
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Scientists from the Sydney Institute for Marine Science gave a talk about sharks in Sydney this week. It was great. It was evidence based. Some points:
- There are more tags on sharks in the East Coast of Australia than elsewhere in the world.
- bull sharks will swim around Sydney while water is above 19 degrees. They leave when the temp drops below 19 but other sharks like cooler water.
- sharks cannot see colour at all. They can perceive electric and magnetic fields.
- sharkbanz have been tested and found ineffective on their test: the test involves throwing chum in the water and then seeing if the shark deterrent will work to stop the shark approaching. Shark Shield works but the company went into liquidation and has been bought by an American company which may get it back into production.
- Swimming is not advised in low light (when sharks hunt, principally) or after rain (when fish get into the overflow) because the sharks are after where the fish will be (and they know).
- Do not swim alone. But swimming in groups means your chance of survival is improved because another swimmer might be taken.
- splashing at sharks attracts them and does not repel them.