Skip to main content
Close-up of a giant pacific octopus' suction cup-covered arms

What's the deal with the octopus poop noodle?

Mar. 21, 2021

The story behind a surprising snack

One day, our staff discovered a surprise. In our giant Pacific octopus exhibit, a long string of octopus waste connected the octopus to a resident sea anemone! What was going on?

Scroll to content

Waste not, want not

The anemone, it turns out, was snacking on the octopus waste. Our team captured the moment on video and shared it on social media. People wanted to know: why does this happen?

The giant Pacific octopus excretes waste through its siphon, a funnel-like hole on the side of its mantle. As a result, its poop comes out as a long, noodle-like strand.

The green anemone, meanwhile, is a detritivore, which means that it eats waste. Though it usually noshes on crabs, mussels, small fishes, and sea urchins, fecal matter is not an unusual meal for this animal.

How it happened

On this particular day, the octopus must have started to release its waste near the anemone.

Then, the anemone started consuming the waste.

As the octopus swam away, the two stayed connected through the string of fecal matter. And violà: an octopus poop noodle!

Though the scene may be surprising to us as humans, it is the result of natural processes. All animals need to get rid of their waste, and all living things need to eat. When those two natural processes occur at the same time and place, we get a surprise like this!

Stay connected

Get your daily dose of Aquarium action by following us on social media. We’re posting behind-the-scenes photos from our animal care team, streaming video from our exhibits, and chatting live with experts on all things ocean. 

Find us on social

Keep exploring

Nature is queer

We’re excited to sea-lebrate the queerness of nature!

Read story – Nature is queer

2026 Lucile S. Packard Memorial Award and Youth Award recipients

We’re proud to announce the 2026 Lucile S. Packard Memorial and Youth Awards for outstanding volunteers!

Read story – 2026 Lucile S. Packard Memorial Award and Youth Award recipients

Taylor Swift, Travis Kelce, and Monterey Bay Aquarium: An Easter egg hunt

Is Taylor Swift leaving Easter eggs about the Aquarium? A dive into fan theories stirring online speculation.

Read story – Taylor Swift, Travis Kelce, and Monterey Bay Aquarium: An Easter egg hunt