• Tlaloc_Temporal@lemmy.ca
    link
    fedilink
    English
    arrow-up
    23
    ·
    16 hours ago

    That’s a Scleral Ring and helps to keep the shape of the eye in fish, many reptiles, and birds. Fish don’t have round eyes (they’re shaped more like M&Ms or chocolate chips), and the ring helps support the shape when swimming. Most rings are just cartilage, but fast swimmers often have bony rings.