We can readily describe sensations of butterflies in the stomach or feeling weak in the knees when things go well, but we are less aware of the ways that kissing helps us to make a reliable assessment of another person.

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Who or what has defended those last outposts of ferns, butterflies, beetles and ants from humankind?

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Chill with the howler monkeys and exotic butterflies while ziplining through the rainforest trees, or zoom down a river on a white-water raft.

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Like most modern butterfly hikes, our excursion involved catch-and-release identifying: we temporarily encapsulated the unharmed butterflies in specimen tubes, identified them and released them 10 or 15 minutes later.

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Organisms that make shells or have skeletons that are exposed to seawater, such as clams, snails and sea butterflies, could see their shells dissolve in water that is too acidic.

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Butterflies also need landing spots to dry their wings, so consider adding a boulder or garden ornament.

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