47 Countries are expected to partisipate in the 15th International Biology Olympiad. 43 National Teams together with 4 observing countries. Competitors are from the followin countriss:
Argentina, Australia, Azerbaijan, Belarus, Belgium, Bulgaria, Canada, China, Chinese Taipei, Cyprus, Czech Republic, Estonia, Finland, Germany, India, Indonesia, Iran, Ireland, Kazakhstan, Korea, Kuwait, Kyrgyzstan, Latvia, Mexico, Moldova, Mongolia, Nigeria, Poland, Romania, Russia, Singapore, Slovak Republic, Slovenia, Sweden, Switzerland, Thailand, The Netherlands, Turkey, Turkmenistan, Ukraine, United Kingdom, USA and Vietnam. and
4 observing countries are: New Zealand, Denmark, Mozambique and Japan.

Iranian team

Iranian team for 15^th International Biology Olympiad is prepared to participate in this year's IBO in Brisbane. 2 girls +2 boys. It makes our team in equilibrium! To be more than 16 hours in the air makes the flight the longest I have ever had. What a Jet lag problem!

The Times of India wrote that The Biology Olympiad is a contest that tested students' skills in tackling biological problems and dealing with experiments. "One has to study slides, interpret and analyze them besides designing experiments.