Black Water Dive® - Official website

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

This larva of a Blanket Octopus was taken at Omi Island Yamaguchi Prefecture Japan. Omi Island is located in the Sea of ​​Japan coast of Yamaguchi Prefecture. This larva of mantle length was about 4mm. Mantle is translucent, brachial membrane envelops head and arms. Ciliary process are lined to Mantle. Lateral view Among the larvae of the arm, dorsal arms is the most developed and the other arm is quite short. Dorsal arms has very large suckers. Sucker is gradually to bigger from the tip, and the largest sucker is fourth from the tip. Web of arms is not yet developed. Chromatophores present on inner edge of each sucker, and absent on funnel. Orange large iridophores are arranged around the eyes. Dorsal view Mantle typically triangular in shape. Dorsal mantle scattered with chromatophores. ventral view Large eyes are facing the ventral. Ventral mantle patterned with a band of yellow from red chromatophores along anterior margin. ...