Magical Butterflies

Magical Butterflies

Looking out over my sunny Honolulu yard and seeing several beautiful Monarch butterflies flitting from flower to flower makes my heart take flight with them. Trying to catch up to photograph them with my digital camera is a losing proposition, however, although I did manage to get a couple of shots.

These magical creatures, pulelehua in Hawaiian, are declining in our islands. The main reason is man’s intrusion into their environment: Concrete, pavement, and overbuilding are not favorable butterfly environment. Our use of pesticides damages their immune systems so they are unable to reproduce. Also, many species of birds have decided that the baby Monarch caterpillars are very tasty. Predator lizards, ants and wasps devour their eggs.

There are several butterfly preservation missions in Hawaii, whose purpose is to educate us on the importance of butterflies. They also encourage the creation of butterfly gardens in the midst of our urban areas. Creating a butterfly haven, even if only on your lanai in a crowded city, may help preserve the remaining butterflies. Let’s learn a little about this wonderful being, the butterfly.

Butterfly Life Cycle

Butterflies have four stages of life: egg, caterpillar, pupa, and adult.

After mating, the adult female lays eggs on leaves and stems on a plant the caterpillars will eat (a host plant). The eggs are tiny, and can be round, oval, or cylindrical. The eggs usually hatch within a few days, and tiny caterpillars emerge. Their job now is to eat and grow. Caterpillars are often colorful with interesting stripes or patterns. They will shed their skins at least four times to enclose a rapidly growing body.

Children love to look at and play with the curious looking caterpillars. Generally speaking, the majority of caterpillars are not dangerous to handle, but don’t eat them!

To pupate, the caterpillar finds a sheltered spot and then sheds its skin one last time to reveal the pupa, or chrysalis. Inside the chrysalis, the structures of the caterpillar are broken down and dissolved, and the butterfly’s structures are formed. Then the imago (adult butterfly) emerges.

The adults then experience courtship, feeding, mating, and egg-laying, all within about a two-week period, their life span. Some butterflies can live longer than that, but it’s not typical.

Some interesting butterfly facts:

• Adult butterflies and moths are attracted to certain nectar plants for their food


• Butterflies are pollinators, that help flowering plants to reproduce and bear fruit


• Monarch butterflies eat poisonous plants when they are caterpillars and are poisonous themselves as adult butterflies. If a bird should eat an adult butterfly, he finds that it tastes really bad, and he will become sick and vomit after eating one. No wonder he learns not to do it again!


• The dust on butterfly and moth wings is called scales. The scales form the bright colors, sometimes with hidden ultraviolet patterns. They have several purposes:

• They are signals to the other sex to attract mating


• The colors warn birds or other predators not to eat them


• Their patterns help the butterflies blend into their background and thus escape predators


• Butterflies are cold-blooded. Dark colors formed by the scales can soak up warmth from the sun to allow their bodies to warm up to flight temperatures


• When butterflies cannot keep their temperatures at activity levels, when it's cloudy, or at night, they become inactive. This resting is not the same as human sleep.


• Butterflies always have their eyes open, since they don’t have eyelids, and they probably don’t dream.

These beautiful creatures are declining in our world, but perhaps we can help restore their population! Check with the preservation societies in your area on how you can help.

Dolphin Watching

Dolphin Watching

Hawaii is one of the few places in the world where visitors can get close to dolphins in the wild. Imagine the thrill of seeing dolphins playing just offshore—or one of the dolphin-watching tour companies will be glad to take you aboard for a chance to see some amazing acrobatic displays just off the side of the boat. Some operators also offer excursions for snorkeling or swimming with dolphins.

Oahu’s west coast waters at Waianae are the most likely place on the island that you can see nai’a, the Hawaiian name for dolphin. Spinner and bottlenose dolphins are those most commonly sighted, and your chance of catching a glimpse is higher during the morning hours when small groups come near shore to rest and play.

Spinner dolphins are famous for their incredible jumps—they often fly into the air and make several complete spins before diving back into the ocean. Generally five to seven feet long and weighing between 130 and 200 pounds, Hawaii’s spinners are dark gray on their backs, with a stripe of lighter gray on their sides and a white belly.

Why do the spinner dolphins spin? Some think it’s just a joyful expression or a teaching demonstration, but it may also be a courtship display, a method of ejecting water from the upper respiratory tract, or the more mundane reason of ridding themselves of parasites.
Whatever the reason, it’s exciting to watch.

Bottlenose dolphins are larger than the spinners, ranging in size from seven to 10 feet in length and weighing between 600 and 800 pounds. Their backs are a medium gray color, with their sides being lighter gray and their bellies are white or pink. The population of bottlenose dolphins around Hawaii is believed to be a few thousand, but you might see them in groups of two to 15 individuals.

Bottlenose dolphins are the ones you generally see at aquarium shows and on TV programs, and are thought to be one of the most intelligent mammals on planet earth.

A Few Dolphin Facts:

• Dolphins breathe through a blowhole on top of their head. They are conscious breathers: in other words, they think about when to breathe. They can breathe without surfacing. They blow a bubble when near the water surface and then quickly draw breath in when the bubble forms a bridge between the blowhole and the air, through the water. As the dolphin exhales the air leaves the blowhole at speeds of over 100 miles per hour.



• A dolphin puts one half of its brain to sleep at a time (literally sleeping with one eye open). In this way, it is never completely unconscious.



• Dolphins hunt mostly at night, eating fish, jellyfish, krill, squid, and small crustaceans. Before diving up to 800 feet into the darkness below, they assemble into a pod, possibly to protect themselves from sharks, which are natural dolphin predators. They find their prey using echolocation.
  
  
  


• Dolphins are generally believed to have an average life expectancy of about 30 years.