B’s photo diary: 11 december, 2015

Urchin9bToday, from my Mediterranean classmates (from Greece, Italy and Albania), I found out that a creature called “Sea Urchin” exists and this is what Wikipedia has to say about it: “Urchins typically range in size from 6 to 12 cm (2.4 to 4.7 in), although the largest species can reach up to 36 cm (14 in). Sea urchins earlier have bilateral symmetry, but they develop five-fold symmetry as they mature. So their bodies consist of five equally sized parts radiating out from their central axes.

Sea urchins are sensitive to touch, light, and chemicals. Although they do not have eyes or eye spots, the entire body of most regular sea urchins might function as a compound eye.”


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s