Greenpeace activists dressed as lifeguards protested on Bondi Beach yesterday to challenge new moves by Japan to increase fishing quotas for the critically endangered Southern Bluefin tuna. The "lifeguards" demand that members of the Commission for the Conservation of Southern Bluefin tuna (CCSBT) use their mandate to bring the species back from the brink of extinction. The CCSBT is meeting at Bondi's Swiss Grand Hotel from today until Saturday.