Birdwatch Note Rating
2024-01-17 10:32:03 UTC - HELPFUL
Rated by Participant: D4CC1AD499166CABBBD2AD13442F1BC695EF6DD496548F74DE2D15D9BFA89C77
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