This Fish Hides for Safety in a Sea Cucumber's Rectum... Yep.

YouTube

Meet the sea cucumber!

Source: YouTube
Source: YouTube

BBC Two's Natural World explains this "cumbersome oddball" (cu-cumbersome?) spends most of its time "sucking sand in through one end of its body, extracting anything nutritious from it and passing what it doesn't want out the other end."

Source: YouTube
Source: YouTube

Meet the pearlfish!

Source: YouTube
Source: YouTube

Natural World explains these slender and slithery fishes go to "extreme depths" to find a safe and secure place to hide from predators.

Wanna take a wild guess where this pearlfish hides?

Britney doesn't like where I'm going with this...Source: Giphy
Britney doesn't like where I'm going with this...  Giphy

Yep. Up the sea cucumber's butt.

Source: YouTube
Source: YouTube

Natural World notes the pearlfish is actually rather "clever" for performing a colonoscopy on living in the sea cucumber because most sea predators are repulsed by it. Both creatures remain safe, even though one creature takes the backdoor to sanctuary.

Source: Giphy
Source: Giphy

But... the pearlfish benefits more from its commensal relationship with the sea cucumber — and will spread its wealth.

Not only does the pearlfish squat in the sea cucumber, but it also invites its friends and family to stay in the occupied asshole. 

Source: YouTube
Source: YouTube

Kind of an ass-inine thing to do.

Source: Giphy
Source: Giphy

Read more: 8 Amazingly Weird-Ass Animals You Never Knew Existed

h/t Digg