Dugong-it

A very bad pun for a very brief sighting.
Tish and I had an appointment in the city today at 1030, on the way we called into a bike shop to get a replacement inner tube for Xanthes bike - I repaired a puncture yesterday, put the wheel back on the bike and pumped it up. I was just about to get Xanthe to come and test it when there was a huge bang and the tube exploded!
Anyway getting the replacement tube took about 30 seconds so we went and sat in a car park near the Boat Trailer Club and chatted whilst looking out to sea. A small pod of four or five Bottle-nosed dolphins were feeding / playing a little way off shore - my second species in a couple of days having had Indo-Pacific Humpback Dolphins over the weekend.
Just as we were about to leave a fat grey shape without any dorsal fin appeared on the waters surface much closer in, lifted its head before vanishing back down again - it was a dugong!
Unfortunately we never saw it again before we had to leave!