How do you catch a platypus?

Platypuses are protected native animals of Australia, and for that reason, they cannot be adopted in the sense of taking them home to care for them. Even registered wildlife carers cannot care for platypuses, because their environmental needs are too complex. The best you can do is sponsor a platypus, meaning that, for a sum of money, you receive certain gifts, and your funds then do towards helping platypuses in general.

A good example can be found at the "Zoos Victoria" related link below.

Another example can also be found at the related WWF link below.

Note: despite what the WWF website says, the plural of platypus is not 'platypi', and they are also not actually called the "duck billed platypus" at all. The correct name is simply "platypus".