Birdwatch Note Rating
2024-01-16 07:04:06 UTC - HELPFUL
Rated by Participant: 77EF9126EDC8EA6D21753B0D5C240156315A54D0A520BED4E17B9A1FC166E9C9
Participant Details
Original Note:
Sea urchins, like their close relatives the sea stars (starfish), don't technically have eyes. Instead, the ball-like invertebrates detect light striking their spines and compare the beams intensities to get a sense of their surroundings. https://www.nationalgeographic.com/science/article/100205-sea-urchins-spines-eyes
All Note Details