Black Water Dive® - Official website

パラオの稚魚たち 4/9-17の日程で行っておりましたパラオ。DayDream RYOMA-1 Midnight Dive & Black Water Dive ® Collaboration Cruiseの結果報告です。 今回のRGBlueには、マンフロットの新型ミニ三脚 PIXI-EVOを中心に取り付けています。安定性抜群。 リーフ棲の魚類を中心にご紹介いたします。 ウナギ目のレプトセファルス期は今回も数多く表れ、複数種が見られました。 ウナギ目のレプトセファルス期　TL:90mm カクレウオ類のベクシリファー期・テニュイス期ともに、こちらも数多く出現しました。 カクレウオのベクシリファー期　TL:40mm 胸鰭をヒラヒラと羽ばたきながら泳ぐハダカハオコゼの稚魚。リーフの上にいるときはじっとしているのに、遊泳期は比較的泳ぎが達者です。 ハダカハオコゼの稚魚　ＴＬ：50ｍｍ 背鰭の第2棘と腹鰭の棘条が大きく伸長する、ハタ亜科稚魚。個体数は多い ハタ亜科稚魚　TL:20mm 日によって数多かったセミホウボウの稚魚 セミホウボウのケファラカンサス期稚魚　TL:45mm 昨夜あたりに一度着底したのかもしれません。すでに模様が現れています。 ヨスジフエダイ稚魚　TL:25ｍｍ コチ科の稚魚も複数みられる。その一つ コチ科の稚魚　TL::23mm 比較的多かったハナダイ亜科の1種 ハナダイ亜科の稚魚 TL:25mm 赤い斑点が均等に配置されるのが特徴。着底するとかなり地味に フサカサゴ科の稚魚 TL:25mm この時期のキンチャクダイ科稚魚はほとんど本種でした。 キンチャクダイ科の稚魚　TL:30mm トリクチス期稚魚の中では比較的わかりやすい。 ヤリカタギ稚魚　TL:17mm フグ科稚魚はなかなか種の区別が難しい。 フグ科稚魚　TL:10mm ハコフグ科コンゴウフグ属。成魚はなぜかパラオでは数少ないようですが、その割に稚魚は頻繁に見かけます。 コンゴウフグ属稚魚 TL10mm キヘリモンガラ稚魚 TL:32mm 吻部や鰓蓋部、後頭骨部などが棘状に張り出すイットウダイ科の稚魚の特徴 アカマ...

Soon departure Palau DayDream RYOMA-1 Midnight Dive & Black Water Dive ® collaboration cruise. 9th to 17th, Apr 2016. DayDreamPalau

Japanese common name: Mako-garei Latin name: Pleuronectes yokohamae Günther, 1877 "Mako-garei" have a wide distribution to Japanese-sea. Image was taken in mid-March. In the larva that seen in this season was the top dominant species. Juvenile of Pleuronectes yokohamae Günther, 1877 (size: about 12mm) more younger size: 10mm REFERENCES Okiyama M. ed (2014)  An Atlas of Early Stage Fishes in Japan Second Edition Tokai University Press, Japan. :217–268. (in Japanese). Kojima J (2014)  ウッカリカサゴのブログ-仔稚魚スケッチ-カレイ科

English name: Firefly squid Latin name: Watasenia scintillans  (Berry, 1911) Toyama Bay is famous for Firefly squid production. That mainly season is between March to May. This season is for Spawning. Distribution of Firefly squid is around Japan of Okhotsk Sea from coast of South Japan. Among them, the largest Firefly squid live in Toyama Bay, common size is ML70mm. It's much larger than those of other regions. Firefly squid,  Watasenia scintillans  (Berry, 1911) eggs drifting in underwater Two to four large organs covered by black chromatophores on tips of arms IV. REFERENCES Watasenia scintillans - Tree of Life Web Project

In early spring of Toyama Bay, we were able to find  meny number of jellies. Among them, the comb jellyfish was seen many. Sea temperature is 10 or 11 degrees celsius. This Cydippida sp. of size is about 20mm. it's had mature eggs. Cydippida sp.  This Hormiphora has a secondary tentacles of yellowish. Size is 45mm. Hormiphora sp. Aglantha digitale is one of Trachymedusae. In early summer from spring, It can see the coast of Hokkaido from Northeast and Hokuriku Japan. Umbrella of muscular glow to rainbow colors depending on the angle of light. Aglantha digitale  (Müller, 1776) Beroe mitrata looks like Beroe forskalii . but, the pharynx of Beroe mitrata is characteristic by dyed red. This individual is still young, size is only about 30mm. Young of Beroe mitrata  (Moser, 1908)  Cyclosalpa bakeri 　habittat around from 45 degrees north latitude to near 40 degrees south latitude of East Atlantic, Pacific Ocean an...

We did pre Black Water Dive® at Namerikawa of Toyama Bay from 18th Mar to 20th Mar. Sea temperature was 10 degree. Visibility is not very well at that time, the results are were few. Most that we have found, it's common in the drifting plankton and nekton. However, there was a new discovery. This is a very small Clionidae species. Size only 2mm. Cilia ring is three-stage. So far, C, limacina limacina has not a report from Toyama Bay. This species has also been reported from water sampling facilities of deep sea water of Toyama so far, and it has been found to be a new species. Clionidae species Oct/12/2017 Postscript There seems to be some announcement today. http://www.tokyo-np.co.jp/s/article/2017101201000867.html http://www.sanyonews.jp/article/610835/1/ 富山湾で発見されたクリオネの仲間ですが、蘭越町貝の館の山崎さんや富山大学らの共同研究により、新種記載されることになりました。

TL: about 50mm Japanese common name: Shiro-uo English name: Ice-goby. Latin name:  Leucopsarion petersii  Hilgendorf, 1880 Ice-goby famous is also in Toyama Bay. It's inhabit the coast of the shallow sea, and eat of plankton. also, gather well in front of the light at Black Water Dive ® . Adult is run-up to the lower reaches of the river in early spring for spawning. The silver color in the center of the body is the air bladder. This picture is female. Leucopsarion petersii  Hilgendorf, 1880