National Geographic has an intriguing article on the eating habits of bonnethead sharks (Sphyrna tiburo).
Researchers put seagrass as bait and noticed that the sharks ate it. There’s no doubt about it, as they filmed the unexpected episode.
The researchers found out that over 50 per cent of the sharks’ diet consisted of seagrass. They were able to digest 56 percent of the organic matter in seagrass.