Blood Cockle, Anadara granosa
Anadara granosa, known also as Tegillarca granosa, is a species of ark clam known as the blood cockle because of the red haemoglobin liquid within. It’s found throughout the Indo-Pacific region from the eastern coast of South Africa towards the north and eastwards to Southeast Asia, Polynesia, Australia, and up towards northern Japan. It resides mostly in the intertidal zone at one to two meters water depth, burrowed down into the sand or the mud. The size of an adult is roughly 5 to 6 centimeters in width.
It has acquired a high economic value as food, and it’s kept in aquaculture. It can be served boiled, roasted, steamed, or more traditionally as raw.