This multiband butterflyfish was cruising past the top of a head of coral. The dark stripe through its eye is a feature seen on many fish species, helping to confuse predators.
Posted in response to Becky’s April Squares challenge theme of ‘Top.’ See more responses here.
Two Step is a popular snorkeling spot, next door to Pu’uhonua o Hōnaunau National Historical Park, otherwise known as Place of Refuge. It gets its name from one of the entry points to the water, where two flat lava ledges make it easy to get in and out. Well, fairly easy; there’s usually a crowd gathered around the steps so it can be a bit of a scrum. Also, small sea urchins sometimes lurk in hollows in the steps.
Once it the water, there’s room to roam. I like to swim the length of the bay and out a little bit, to where I can look down the coral slopes leading to the sandy floor of the bay.
Posted in response to Becky’s April Squares challenge theme of ‘Top.’ See more responses here.
This is a typical pose for an arc-eye hawkfish, keeping very still as it nestles in a head of cauliflower coral. But the coral is not well. This patch is mostly bleached. The causes of coral bleaching include warmer than normal water temperatures, pollution, and sunscreens containing coral-killing ingredients.
Because of this third factor, Hawaii has passed a bill which will ban the sale of sunscreens containing oxybenzone and octinoxate. This law goes into effect January 1, 2021. While this will help, it won’t do anything to keep harmful chemicals out of water runoff, and it won’t do anything to prevent the warming of the Pacific Ocean.
Last fall, we had a coral bleaching event here because of warmer ocean temperatures. It wasn’t as bad as feared, but still did damage to corals that were just recovering from previous bleaching events. There are one or two snorkeling sites here that I don’t visit anymore because the state of the coral is just too depressing. I’d like to think that this degradation can be reversed but, honestly, I’m not optimistic about that.
An a’ama crab sits on a rock, watching and waiting. Then a swell rolls in covering the crab with white water until only a single eye is visible.
I think this is a bloody hermit crab, but this was my only look at it. The greenish lump, from which the legs protrude, is not a shell but a lump of rock or old coral.
Triton’s trumpets are snails and their shells are the second largest in the Indo-Pacific. They can attain a length of 20 inches. The colorful shells are also quite beautiful, especially when they catch the light filtering down from above.
These snails eat echinoderms including Crown-of-Thorns stars, which feed on corals.
This is the molted shell of an a’ama crab, seen on the North Kohala shore. A’ama crabs are numerous around the Big Island and they scuttle away when disturbed. But while these crabs are black, their molted shells turn red in the sun, as this one has.
A bright-eye damselfish guards its territory, which includes this red pencil urchin, against intruders.
Graham's Island 