A sharky public service message/pro-shark propaganda. Sharks get a bad wrap in the media. Eating weird stuff. The importance of sharks in the ocean and their roles in their particular ecosystems.
Biting the internet. Alternative shark species name suggestions. “Exploratory” biting. Claspers! The Megalodon’s likely “biiiiiiiiiig” penis. Shark skin with dermal denticles, aka “teeth paper.” Shark intelligence and how you might measure it.
Irl best estimates of megalodon size vs the creatures of the film. Limited fossil data and cartilaginous skeletons. Learning from paleoarchaeological study of ancient shark relatives with more calcified skeletal material. Working backward from the modern shark bodyform. Ancient buzzsaw-mouthed monsters. The importance of teeth.
Pressure and darkness at depth. Adaptations to pressure and darkness. Odd, squishy creatures. Blob fish as the gudetama of the sea.
Shark public image management. Sharks with eyebrows.