Not so much synchronised swimming as synchronised landing. This group of Canada Geese were startled from their spot at the far end of the Plover Lake at Lackford Lakes, and flew straight towards our hide, landing perfectly together. I counted over 70 Canada Geese and 50 Mute Swans on the lake that day.
My Canon 60D was mounted on the digiscope at this time, so I caught this on my old Canon 450D. After being dropped, it only focuses on the centre spot, but it did a good enough job here!
Canon 450D with Canon EF-S 18-200mm at 50mm, 1/400 sec at f/10, ISO 400