This is a long-spined sea urchin, or Diadema antillarum. We weighed them, measured their mouthparts and body lengths. Adult Diadema antillarum has black spines while juveniles have white spines. It is interesting to find one with both black and white spines!

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s