HIRONO, Iwate Prefecture--Sea urchin are a culinary delicacy, but because their shells are often seen as too difficult or costly to recycle, they end up getting tossed out in bulk. But a local ...

sea urchin shell stock videos & royalty-free footage 00:12 Starfish prey on a sandy bottom on the shells. Starfish prey on a sandy bottom on the shells. Amazing underwater world and the inhabitants, ...

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This sea urchin is a spherical shape and typically pinky-purple in colour although they can also be red, green, or yellow. When they die, the sea urchin will drop its spines leaving only their shell, ...

The green sea urchin is slightly flattened in shape and greenish in colour, with purple tips to the spines. In the past, sea urchins were referred to as sea hedgehogs on account of their spiny shells!