Piotr Naskrecki / Helenor Morpho (Morpho helenor) butterfly in rainforest, Monteverde Cloud Forest Reserve, Costa Rica

Angelo Gandolfi / Blue morpho (Morpho helenor) butterflies feeding on mango fruit, butterfly observatory, La Paz Waterfall Gardens, Costa Rica.

Martin Gabriel / Morpho butterfly (Morpho helenor) caterpilar on twig, Costa Rica (captive)

Martin Gabriel / Morpho butterfly (Morpho helenor) caterpillars feeding on leaves, Costa Rica (captive)

Joel Sartore / Photo Ark / Narcissus blue morpho butterfly (Morpho helenor narcissus) resting, portrait, Selvatura Park, Costa Rica. Captive.

Joel Sartore / Photo Ark / Narcissus blue morpho butterfly (Morpho helenor narcissus) portrait, Selvatura Park, Costa Rica. Captive.

Roman Willi / Timelapse of a blue morpho butterfly subspecies (Morpho helenor marinita) emerging from chrysalis and expanding wings, Osa Peninsula, Costa Rica, December.