El erizo negro de espinas largas
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How often are you scuba diving or snorkeling?
Never
Once every now and then
At least once a month
At least once a week
Once a day
More than once a day
Have you ever seen the Long-spined urchin?
Yes
No
Have you recently noticed a change in their abundance?
Yes, I have been seeing more
Yes, I have been seeing fewer
No
How old are you?
0-10
11-20
21-30
31-40
41-50
Over 50
What is your profession?
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