Sea urchins, as a unique Marine organism, have attracted wide attention because of their unique appearance and rich ecological value. Their shells are hard and usually show bright colors, as if they were gems in the ocean.

Sea urchins are unique and fascinating Marine creatures that belong to the phylum echinoderm and are commonly found in warm coastal waters. Their shape is highly recognizable,usually appearing round or oblate, and covered with a hard shell.

Sea urchins are unique creatures in the ocean, and their shape and structure are often striking. The outer shell of the sea urchin appears in a variety of colors, from lavender to dark green, and some species even have gorgeous spots.

Sea urchin is a kind of invertebrate living in the sea. It has attracted people's attention because of its unique shape and rich species. In the world of Marine life, specimens of sea urchins are not only valuable for scientific research.

Sea urchins are a habitat known for their unique shape and ecological characteristics. The outer shell of a sea urchin is hard, usually spherical or oblate, and its surface is covered with many small spines and grooves.