Why Do 'Japanese Moss Balls' Float By Day And Sink By Night?

Why do those adorable velvety green “Japanese moss balls” living in your aquarium float during the day and sink at night?

Marimo Moss Ball Problems and Issues Guide

Dora Cano's Instagram, Twitter & Facebook on IDCrawl

anyone knows whats inside these floating java moss balls? bought them from petco and im thinking on eventually breaking them apart to make a moss wall but idk how thick the moss

Why Is Your Marimo Moss Ball Dead (& How To Revive It) - Betta Care Fish Guide

Dora Cano's Instagram, Twitter & Facebook on IDCrawl

Dora Cano's Instagram, Twitter & Facebook on IDCrawl

Marimo Moss Ball Care Guide - Everything you need to know

Moss Balls Float ?!?! Aquarium Plants Forum

Dora Cano's Instagram, Twitter & Facebook on IDCrawl