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Hydrobiolog
Black diadem sea urchin (Echinothrix diadema) hid in a rock cavity on a coral reef in the Red Sea, Egypt
Black diadem sea urchin (Echinothrix diadema) hid in a rock cavity on a coral reef in the Red Sea, Egypt
Hydrobiolog
Black diadem sea urchin (Echinothrix diadema) hid in a rock cavity on a coral reef in the Red Sea, Egypt
Black diadem sea urchin (Echinothrix diadema) hid in a rock cavity on a coral reef in the Red Sea, Egypt