Sea of Izu Oshima・The Undersea Geopark(1)

This is my report of diving in Izu Oshima. You can get there by jet foil boat in only 2 hours and is so surprising that it is this close to Metropolitan Tokyo.

It is a paradise for various sea creatures, which is great for photographers. The first thing we wanted to see was the Hammerhead Shark in the early morning hours, but I could also observe other things at the diving spots “Ou no hama 王の浜 (Kings Beach)” and “Aki no hama 秋の浜(Autumn Beach)”.

伊豆大島ダイビング Diving at Izu-oshima 王の浜のケヤリ (3)

This is a type of seaweed called ”KEYARI” in local language, Sporochnus radiciformis that we saw from “King’s Beach 王の浜”.  It is a popular subject for photo enthusiasts because of its beautiful peacock-like feathers, if you can manage to creatively get the right angle with some technique. It is widely distributed in the Japan sea, but it is said that the areas where the Kuroshio current passes through are more colorful.

ケヤリとテンクロスジギンポ Piano fanglenny 伊豆大島ダイビング Diving at Izu-oshima 王の浜(1)

Then this Piano Fangblenny who shares the area with the S. radiciformis. These little fish are found on the Pacific side of Japan and are only about 10 cm (4 inches) long. I saw in the same place, two times, but it never showed its entire body. This pose, poking it’s face out and with the S. radiciformis in the background was irresistibly cute.

テングダイ 王の浜 伊豆大島ダイビング Diving at Izu-oshima (2)

At “Ou no hama 王の浜” (King’s Beach), we also saw the Banded Boar head, a fish that stands out and grows to about 50 cm (20 inches). These were quite accustomed to divers.

テングダイのアゴヒゲ 伊豆大島ダイビング Diving at Izu-oshima 王の浜

Like Long barbeled grunter, it has fine whiskers on its lower jaw, which are said to be skin protrusions.

コケギンポ 伊豆大島ダイビング Diving at Izu-oshima 王の浜

Just as I was leaving the King’s Beach 王の浜, I stopped at this structure “Rock of Moss Fringehead.” This super cute and tiny collection of Moss Fringehead captured many divers attention and we were all trying to get a good photo while being swayed by the waves and current.

ムチカラマツ類とガラスハゼ

It was “Aki no hama 秋の浜 (Autumn Beach)” where I could observe the most variety creatures (it is also popular with other divers because of the easy access point).
This is a Whip coral goby attached to the whip coral.

ニシキフウライウオの伊豆大島ダイビング Diving at Izu-oshima 秋の浜 (2)

And diving to a deeper level, this Harlequin ghost pipefish could be seen. It’s hard to see because it’s camouflaged to look like the coral!

ニシキフウライウオの伊豆大島ダイビング Diving at Izu-oshima 秋の浜 (1)

The male Harlequin ghost pipefish mimics the coral almost exactly. They are a member of the Solenostomidae family, and was previously thought to be an intraspecific mutation, but in 1994, they were named as a separate species.

ニシキフウライウオのペア伊豆大島ダイビング Diving at Izu-oshima 秋の浜

This is a pair of Harlequin ghost pipefish. The female is pregnant, carrying the eggs in her belly.

ナンヨウハギ

The babies of the Palette surgeonfish.

オルトマンワラエビ 秋の浜

Ortmann’s spider-crab.

トラウツボ Dragon Moray 伊豆大島ダイビング 秋の浜 Diving at Izu-oshima (2)

Then, according to our guide Mr. Furuyama, the first thing that foreign divers request to see is this Dragon Moray Eel.

トラウツボ Dragon Moray 伊豆大島ダイビング 秋の浜 Diving at Izu-oshima

The Japanese name of this fish is “TORA-UTSUBO”, translated as Tiger moray eel. To me, it doesn’t look like a “tiger”, (the pattern seems more like a leopard), and the name “Dragon” seems accurate. But perhaps the most accurate description could be the “Qilin” which appears in Chinese mythology?

Photo & text: Mariko SAWADA
Observation: Sep 2021, Izu-oshima, Tokyo, JAPAN

Tags: , , , , , , , , , , , , , , , , , , , , , , , ,

Harlequin Ghost Pipefish(Yakushima)

ニシキフウライウオ Harlequin ghost pipefish 屋久島 (6)

We could see a pair of Harlequin ghost pipefish (Solenostomus paradoxus) in the seas around Yakushima. The pair were in perfect unison with their mimicry, which made it both astounding and beautiful to watch.

ニシキフウライウオのペア(屋久島)A pair of Harlequin ghost pipefish

Harlequin ghost pipefish is a member of the family Solenostomidae. The Solenostomus were previously thought to be an intraspecific mutation within Solenostomidae but, they became an independent species in 1994.

ニシキフウライウオ Harlequin ghost pipefish 屋久島 (9)

On every part of the body and along its fins, there are spikes that stick out, with spotted patterns as well. The body is a white color with some transparent areas, but the designs and patterns that appear are so diverse!

ニシキフウライウオ Harlequin ghost pipefish 屋久島 (5)

The larger one is the female, and the smaller one on the right is the male. Unlike the pipefish, where the males incubate the eggs, in family Solenostomidae, they leave the job of protecting the fertilized eggs to the females with the larger pectoral fins.

In English, the name of the fish is “Harlequin ghost pipefish” or “Ornate ghost pipefish,” but in Japanese they are called “Nishiki fuurai-uo.” “Nishiki” refers to a traditional Japanese weaving textile, highlighting the intricate designs seen on this unique fish.

 

Image & text : Mariko SAWADA

Observation : Jun 2021, Isso-bay, Yakushima, Kagoshima

Tags: , , , , , , , ,