Original: Its limpid, globular eyes, which appear red or blue, depending on lighting, are proportionately the largest in the animal kingdom at 2.5 cm (1 inch) in diameter.
Simplified: Its limpid, globular eyesâ "which appear red or blue, also depending on lightingâ" are proportionately the largest in the animal kingdom at 2.5 cm (1 inch) in diameter.