When it comes to predators, size matters

Marine reserves play an important role in sustaining ecosystem diversity and abundance. Their presence enables certain species to return to a natural size structure, which enables predators to control destructive prey.

Are tiny grazers the new hope for Caribbean reefs?

Thirty years ago a mysterious disease wiped out long-spined black sea urchins across the Caribbean, leading to massive algal overgrowth that smothered already overfished coral reefs. Now, marine biologists at the Smithsonian ...

Tropical sea urchins caught between a rock and a hot place

The balmy waters of the Caribbean could turn into a deadly heat trap for countless tiny creatures. Authors of a new study conducted at the Smithsonian Tropical Research Institute (STRI) in Panama discovered that microscopic ...

Is aging inevitable? Not necessarily for sea urchins

Sea urchins are remarkable organisms. They can quickly regrow damaged spines and feet. Some species also live to extraordinary old ages and—even more remarkably—do so with no signs of poor health, such as a decline in ...

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