Photo Friday: Structure

Interesting relationship: the coral builds its structure around a shell occupied by a sipunculid worm

This is my entry for the Photo Friday: Structure challenge. This is an interesting relationship between the coral and sipunculid worm. A coral larva settles on a shell already occupied by a sipunculid worm. The coral grows over the [...]

Walking Coral

What mechanism allowed this coral to leave a trail in the sand?

Bali, Indonesia March 2012 ~ I am certain I just saw a coral move across the sand. I don’t have time to stop because I am swimming rapidly to keep up with Ned and our guide Eddy, but now I’m paying more [...]