Skeleton On The Sea Floor -- revision

[Shay]

Hi there! Thanks for your great feedback, I'm here to reciprocate:

This was a rather short but complete, and very intriguing read. 

It just appeared there one day, fused to the seabed - the "seabed" bit was eloquently interwoven into a rather intriguing "beginning". I kind of like the balance you employed here, between a directness and slight abstractness (which the "it" highly contributes to). 
as one clinically depressed merges with their mattress - the "merges with the mattress" is also a highlight to me, and this is taking a very interesting direction overall. 
or decomposes into couch cushions. Weight fell - I like the alliteration here, it's a nice and consistent scheme you employed (along with the "mattress" one). But I do agree with what's been said already, the decomposing process is a bit misleading here. 
like a thick blanket over their face as they slept, - combining this with the "weight fell" bit from the previous sentence, the initial meaning hereby appears to be rather vague. It might be a reference to the (now non-existent) burden, but I might be far fetching here. 
convincing the mind to keep dreaming and the lungs to surrender. - I love the contrasting stream here, "lungs to surrender" is a thoroughly intriguing imagery. 
It just appeared there one day, like a woman
of thirty-five suddenly seeing her feet wearing sensible heels, - another highlight. Very well worded. 
sitting behind a desk with a picture of a husband and two kids, - again, the directness prevails hereby and I appreciate that. 
unable to breathe. - a straightforward and impactful closure. 

Great work here. Thanks for sharing!