However, sea urchin spines can break easily ... Unfortunately, BARBara just wasn't moving. She got it checked on day 14 and day 18, when the podiatrist opened the area where the spine went ...

Courtesy of Noma Sloan displays a sea urchin he plucked from the sandy seafloor ... Urchins have hundreds of adhesive tube feet and move over the sandy seafloor at a fairly leisurely pace.

In New South Wales, barrens can form in areas where there is an overrepresentation of long-spined sea urchins. It's assumed that large fish—believed to be a key predator of urchins—play a significant ...

The impact of a standing on sea urchin. The impact of a standing on sea urchin. Reddit/u/Snoo_12724 "There is a 95 foot long line of giant sandbags going out into the water on a part of Kuhio ...