Sea life

Round stingray

Urobatis halleri

A small round stingray with a mottled brown disc lying partly buried in sand underwater

Photo: michael h j c from California, USA · CC BY-SA 2.0 · via Wikimedia Commons

Where
Beaches
When
All year, most in warm calm water on sandy beaches
Size
Disc about 25 to 30 cm across
Should I worry
Keep your distance
A sting is very painful but not dangerous for most people. Shuffle your feet entering the water. Treat a sting with water as hot as you can stand.

Warm calm water, sandy bottom, the sort of afternoon that makes you wade straight in. Under the sand a small round ray is doing exactly what it does all day, which is nothing, until a foot lands on it.

Where you’ll see it

Sandy shallows on calm beaches, buried with just the eyes showing. Hermosa and the calm end of Coco have them. Rocky beaches and surf beaches, less so.

What to know

The barb at the base of the tail is defensive and only used when the ray is trapped. Step next to one and it swims off. Step on it and it whips the tail round. The pain is severe and out of proportion to the wound, and hot water is the treatment: as hot as you can bear, for as long as it takes. Serious complications are rare. The prevention is the shuffle, and it becomes a habit within a week of living here.

Questions people ask about this one

What do I do if a stingray stings me?

Get out of the water and soak the wound in water as hot as you can tolerate without scalding, for thirty to ninety minutes. It breaks down the venom and the relief is dramatic. Clean the wound, check nothing is left in it, and see a doctor if it is deep, if part of the barb remains, or if it shows signs of infection later.

How do I avoid stepping on a stingray?

Shuffle. Slide your feet along the sand rather than stepping, so a buried ray feels you coming and moves off. They sting when pinned. It is called the stingray shuffle and everyone here does it without thinking.

Wondering what else is out there?

Ask me on the call. I'll tell you what actually shows up in a Coco garden, what to do about it, and the one guy everyone rings when there's a boa in the roof.

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