Something we never noticed before

You may think we are children, he's a bear
Glad to be outdoors, walking together
Spirit of adventure, finding something
We never noticed before

We are three explorers looking for something
We rescued a stag beetle on its back
We found a bee orchid
What we're looking for
Doesn't have to be rare

We found an air raid shelter
From the Second World War
We saw chestnut horses give riding lessons
Watched men roping and measuring pines
Before buzzing down our jungle
We hadn't seen it before

You may think this is a paradox
To look for serendipity, so much the better
We particularly enjoy finding a paradox
Something we never noticed before