Sea Urchins - Spiny Relative of Starfish and Sea Cucumber

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These Strange Animals Have Spines That Can Be Dangerous!

About 1,000 species of sea urchins live in marine habitats ranging from the intertidal zones and shallow coral reefs to the deepest submarine trenches (such as the Marianas Trench--Challenger Deep near the island of Guam) up to 6,800m. Sea urchins live in all marine environments--including the Arctic Sea and the Antarctic Ocean.

Of the many different species of sea urchins, there are a few that produce eggs (called roe) that are considered edible--and even a great delicacy--for some folks (for sushi, in particular--pictures are below!).

New Flickr Photos 

Sea Urchin 1 'Crumpling Technique' by Origamiancy

Sea Urchin 1 'Crumpl...

Sea Urchin 2 'Crumpling Technique' by Origamiancy

Sea Urchin 2 'Crumpl...

sea food in sea urchin by stu_spivack

sea food in sea urch...

untitled by holisticmonkey

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Pink by Quinn Dombrowski

Pink

sea urchin by Theyoungones1994

sea urchin

CAS_050309_1914 by JessyeAnne

CAS_050309_1914

tuning by Philippe Guillaume

tuning

sea urchin cappucino by stu_spivack

sea urchin cappucino

Peekytoe Crab & Sea Urchin Salad by TheGirlsNY

Peekytoe Crab &...

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Spines You Should Be Aware of! 

When you are snorkeling or diving in tropical waters, you should be aware of your surroundings (sort of a duh situation, right?). In particular, you can tell by the first picture in this Squidoo lens that the spines of certain sea urchins are not something to be trifled with. Although the spines of many sea urchines are somewhat blunt (for example, the "red pencil urchin"), the nasty long spines of the black urchin can do serious damage if you brush up against one or step on one with bare feet or put your hand on one. There is a toxin involved with the spines, and thus it's imperative that you remove the broken-off spines that impale your hand or foot (or other body part). The toxin is generally not fatal, but it can be extremely painful. Also, since the wounds can get secondary infections, you should get medical attention if you accidentally jab yourself with one of these creatures.

Sea Urchin "Eating a Cookie"... Probably not the best thing for it to eat! 

Sea Urchin Eating A Cookie

Here's the full take of feeding Oscar a biscuit, sped up, put to music, and some video effects for fun. (Isn't Lil' Urchy cute? Aww!) My second video ever! Whee! Movies are fun! (update: related link! http://www.youtube.com/watch?v=N7tOWPRpwbU )

curated content from YouTube

Sea Urchins - Echinoderm Cousins of the Starfish and Sea Cucumber 

If you go to a Japanese restaurant--you can usually find Sea Urchin egg sushi... (It sort of looks like salmon eggs on rice, but it tastes okay... maybe an acquired taste, however!)

This is about the only way that's good to have a sea urchin on your shirt! 

.... The other way is a tad painful!

Sea Urchin (B) Women's Plus Size V-Neck T-Shirt

The purple sea urchin is small by urchin standards, they can move surprising fast, and they are very pretty. We've stylized her a bit to bring out her 'dangerous beauty'.

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Sea Urchin Goodies 

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The Amazing World of Sea Urchins! 

Bluewater Gold Rush/The Odyssey of a California Sea Urchin Diver by Tom Kendrick

Bluewater Gold Rush/The Odyssey of a California Sea Urchin Diver by Tom Kendrick

An avid Santa Barbara surfer gets into sea urchin more...0 points

Mouse Pad with animals, sea, urchins, ocean

Mouse Pad with animals, sea, urchins, ocean

Professional "Brite White" fabric mouse more...0 points

Sea Urchin, Echinopluteus Larva Art Photographic Poster Print by Oxford Scientific, 36x48

Sea Urchin, Echinopluteus Larva Art Photographic Poster Print by Oxford Scientific, 36x48

AllPosters.com is the world's #1 seller of posters more...0 points

Art Poster Metal Framed Print - Sea Urchins - Artist: Plantrose- Poster Size: 15 X 11

Art Poster Metal Framed Print - Sea Urchins - Artist: Plantrose- Poster Size: 15 X 11

Plantrose:Sea Urchins15 X 11 inches. High Quality more...0 points

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  • Reply
    naturegirl7 naturegirl7 Dec 5, 2008 @ 4:46 pm
    When my Dad was stationed in North Africa, before WWII, he told of Arabs who sold sea urchins and would cut them open and scoop out the eggs for their customers. Welcome to the Naturally Native Squids group. Don't forget to add your lens link to the appropriate plexo and vote for it.
  • Reply
    Classic Classic Jan 5, 2008 @ 6:24 pm
    Thanks for submitting your great lens to my group Nature and Environment! Looks like something to NOT step on...

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