I found it! They also make this
Source: https://twitter.com/FiyawerksArt/status/1589349209945550848?s=20&t=oS4lVBDfK5Z7YFRxxNt-PQ
Original pillow: https://www.amazon.com/Original-Chumbuddy-Shark-Sleeping-Cover/dp/B09HN5C37N/ref=asc_df_B09HN5C37N/?tag=hyprod-20&linkCode=df0&hvadid=563706976547&hvpos=&hvnetw=g&hvrand=12462944010005959184&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9010525&hvtargid=pla-1586665773784&psc=1
https://www.amazon.com/Original-Chumbuddy-Shark-Sleeping-Cover/dp/B09HN5C37N/ref=cm_cr_arp_d_product_top?ie=UTF8&th=1
shork
fluff
https://www.amazon.com/Original-Chumbuddy-Shark-Sleeping-Cover/dp/B09HN5C37N/ref=mp_s_a_1_7?keywords=shark+sleeping+bag&qid=1652845287&sr=8-7
This actually already exists, I've seen it before.
https://www.amazon.com/dp/B09HN5C37N/ref=cm_sw_r_awdo_navT_g_DS8M1B54Z8DFV5G6T3Y3
Oh God and it's called Chumbuddy.