Investigation of ascidian and reef microbial rocks @Okinawa
(Oct. 26-29, 2021)

We searched for ascidian on Kumejima Island for Sasaki-san's master thesis research.
We went snorkeling and discovered several types of ascidian. Even in Okinawa, the sea was cold in late October.
Next, we investigated the reefal microbial crust contained in typhoon stones. It is said that large rock masses like this are carried by typhoons.
We also searched for ascidian on the main island of Okinawa, but perhaps because it was the wrong season, we couldn't find any. By the way, a large amount of pumice from Fukutoku Okanoba had washed up on the shore.

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