sea-urchins

Yum! Sushi~

You will rarely see the complicated kanji on real menu though~ :D

鮭 sake: salmon
鮪 maguro: tuna
卵 tamago: egg (sweet scrambled egg)
鰻 unagi: sweet sauce eel
海老 ebi: shrimp/prawn
雲丹 uni: sea urchin
山葵 wasabi: green spicy paste
紅生姜 benishouga: pickled red ginger

Yum!!! 美味しそうですね!
Happy learning! 。゚✶ฺ.ヽ(*´∀`*)ノ.✶゚ฺ。

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CrunchyNihongo - Easy to Learn Japanese Lessons Site
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4

Images + GIFs : Deep-Sea Creatures

Continued: Last week we used GIFs to introduce some creatures that live at the bottom of the Gulf of Mexico, as captured on this live-stream for the past weeks. Here’s more! 

There’s a lot more photos and explanations where that came from.

Brought to you by: Researchers aboard the Okeanos Explorer who operated the sub; National Oceanic and Atmospheric Administration (NOAA) who led the expedition; and GIF-extraordinaire Rose.

3

Tiny glass rocketships?

Nope, just the larval form of sea urchins, called a pluteus (plural: plutei).

The pluteus swims and feeds using ciliated bands located on its arms and body (the pluteus’ arms are those projections that form the rocketship’s “base”).  

The pluteus serves as both a larval form and a sort of vehicle for the urchin. Over the course of several days, an urchin will begin to grow and develop inside the pluteus.

Then, when the time is right, the tiny rocketship will land onto an appropriate substrate (usually covered with algae and bacteria), and the young urchin will break out. The pluteus tissues then degenerate and are discarded or absorbed by the growing urchin.  


Video source: Plankton Chronicles

Reference: Hinegardner. 1969

                  Mazur and Miller. 1971.

3

Shingle urchin (Colobocentrotus atratus)

The shingle urchin is a species of sea urchin in the family Echinometridae. It is found on wave-swept intertidal shores in the Indo-West Pacific, particularly on the shores of Hawaii. This urchin is a deep maroon colour and shaped like a domed limpet. It can grow as big as a soft ball but is usually much smaller. The upper surface is a mosaic of tiny polygonal plates formed from modified spines to form a smooth mosaic. This is fringed by a ring of large, flattened modified spines. On the underside there is another ring of smaller flattened spines and a large number of tube feet. This urchin is usually found on substrates fully exposed to waves and their associated abrasive effect, often in groups. It feeds on periwinkles, other urchins and coralline algae.

photo credits: wiki, Ken-ichi, tumblr