The Hawksbill Turtle’s Distinctive Diet

In strange company with a few species of fish and nudibranchs, the hawksbill turtle is one of very few animals that feeds principally on sponges. It is the largest vertebrate and only reptile to feed on this prey. Spongivory, or feeding on sponges, is rare, presumably because of the significant defenses of sponges, such as siliceous (glass) spicules, indigestible spongin fibers, and an array of chemical compounds.

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The Road to Conservation

Conservation of sea turtles is not simple. It is confounded by turtles’ vast marine distributions, the many unsolved mysteries of their natural history, and the fact that sea turtles and the hazards to their survival are not distributed evenly over the face of the planet. Given the different approaches needed in different situations and the relative urgency of them all, conservationists must be strategic in their approach.

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The State of the World’s Hawksbills

The hawksbill sea turtle has been one of the most persecuted of the world’s sea turtles; hunted not only for its meat and eggs like other sea turtle species, it is further cursed by its beauty. The mottled, translucent shell plates—called scutes by scientists and bekko by Japanese artisans—have been coveted for centuries as raw material for jewelry, spectacle frames, spurs for fighting roosters, and furniture embellishments.

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