* Unidentified Pink Round Soft Sea Creature

Today while taking my daily walk on the beach, I came across a pink round soft sea creature, and took a picture of it in hopes to learn what it is by doing an image search on the internet.

When the image search was unsuccessful with a handful pictures of pretty pink flowers, I typed 'pink round soft sea creature' in the search box, and the search engine came back with a whole lot of interesting things that were not the answer to my question. The closest sea creature that fit my description was the Pink Sea-Through Fantasia:

Although the name sounds like a piece of sexy lingerie, it actually is a kind of deep-sea cucumber found in the west Pacific. However, when you execute a search with the words 'pink sea-through fantasia', more than half of what it returns are most certainly not sea creatures!

I really would like to learn what I found on the beach today is. Let me know if you have any information!