What’s the difference between Australian Chia Seeds and Mexican Chia Seeds?

There is no significant difference between the two in terms of nutritional profile which is more affected by factors such as when the seeds are planted and harvested, the climate, elevation, latitude, soil condition- how it is maintained, irrigation, etc. Seasonal variations exist from crop to crop, so averaging them all, there are no significant differences. Some people may have found the Australian Chia seeds to be crunchier, cleaner but less quick to absorb fluids. Mexican Chia, has always had its following as the seeds originated in Mexico and Central America and were a staple in the diets of ancient Mayans and Aztecs.