#Repost @bbcearth
You won't look at sand the same way ever again 🫣
Humphead parrotfish use their powerful beaks to scrape algae from coral, grinding up the coral as they feed. What comes out the other end? Watch till the end to find out!
Revisit 25 years of extraordinary ocean stories from Blue Planet with us. Find out where to watch the full series via the link in our bio 🔗