I'm on a roll.Today at the Emu Valley Rhododendron gardens,Ridgley,Tas.
Spotted this fellow.

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He must have recognised me so swam across and did 2 swim pasts.

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But that wasn't all.At another pond on the property this fellow was in shallow water so you could see him under water.bottom right then centre of pic.

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Then he swam across to the other side and disappeared.

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Stayed on the bridge for a while then walked around that side.From the bank it appeared again and did a couple of rolls for me.No more than a metre away.

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I did see a third at Fern Glade park but it was too quick for me.
But I was happy with 4 platypi in a weekend.