Design legibility at distance. A shark silhouette has to read as a shark from across a dive shop or aquarium gift-shop checkout line, not just up close on a phone screen. Shark t-shirts that compress the dorsal fin and tail proportions until the animal reads as a generic fish get cut from consideration.
Species accuracy where the design implies a species. A design labeled as a great white shouldn't read as a tiger shark, and a hammerhead should have the cephalofoil clearly visible. Shark fans notice these details, and the marine biologist on the gift list will absolutely notice.
Humor that lands inside the niche, not outside it. Crazy-shark-lady quotes, sleeping pajama gags, EKG heartbeat graphics, and 'I like sharks and maybe three people' lines work because shark people already make those jokes about themselves. We skip humor that punches down on the animal or leans on overused film references.
Gift-readiness for the most common shark occasions. Shark Week in late July, Shark Awareness Day on July 14th, the run-up to a cage-dive trip, and birthdays for the kid with shark posters on every wall. The shark t-shirts in this guide are sorted so a gift buyer can match an occasion to a style without scrolling for an hour.
Conservation tone where it appears. Several designs nod to ocean conservation and the 'misunderstood predator' framing rather than the fear angle. We keep those tones clear and identifiable.