What is this creature?

[nightOwl]

Can anyone tell me what this is? I took it while snorkeling down in Mexico.

P7280527 by LifeThrough_TheLense, on Flickr

 

[somosomo]

Looks like a live cowry

 

[nightOwl]

Looks like a live cowry

The body was really soft and it poppies out its back...it was the weirdest thing.

 

[TetoCCB]

Some sort of sea slug, perhaps?...

 

[tenurepro]

Sea cucumber?


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[ThRoewer]

Bursatella leachii

 

[ThRoewer]

Gulf of Mexico variety:

https://www.jaxshells.org/alea.htm

Indo-Pacific variety at Lembeh Strait:

https://en.wikipedia.org/wiki/Bursatella_leachii

 

[nightOwl]

Gulf of Mexico variety:

https://www.jaxshells.org/alea.htm

Indo-Pacific variety at Lembeh Strait:

https://en.wikipedia.org/wiki/Bursatella_leachii

Definitely Gulf of Mexico Variety is exactly what they looked like. There were tons of them! Thanks.