Sea urchins see with their feet
Published 12 June 2018 Diadema africanum (Photo: José Carlos Hernández) Sea urchins lack eyes, but can see with their tentacle-like tube feet instead, previous research has indicated. Now, researchers at Lund University in Sweden have tested their vision in a new study, and shown that while sea urchins have fairly low resolution vision - it is good enough to fulfil their basic needs. “Sea urchins
https://www.lunduniversity.lu.se/article/sea-urchins-see-their-feet - 2025-08-13