Ant Forest Magic Ocean February 29: Which sea urchin is called sea money

php Xiaobian Yuzai will help you unlock the secrets of the magical ocean of Ant Forest! The amazing ocean topic for February 29th is: Which sea urchin is called sea money? Let us uncover the mystery of this ocean world together!

Ant Forest Magic Ocean Today’s Answer

Ant Forest Magic Ocean February 29: Which sea urchin is called "sea money"?

Question: Which sea urchin is called "sea money"?

Answer: Biscuit sea urchin

Content analysis:

1. The shell of horse dung sea urchin is solid and hemispherical, with a diameter of 30~40 mm and a maximum of 60 mm;

2. The oral surface is low, slightly raised, and the oral surface is flat. The width of the step zone and the inter-step zone are equal, but the degree of swelling of the inter-step zone is slightly higher than that of the step zone;

3. The activity of sea urchins is to crawl on the seabed with the help of the movement of tube feet and spines, so the movement speed is relatively slow, and sometimes they are adsorbed on rocks with tube foot suckers.

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