What is the percentage of how much mollusks there is on the earth?

Mollusks constitute a significant portion of the Earth's biodiversity, with estimates suggesting there are over 85,000 recognized species. They make up about 23% of all marine animals and are one of the most diverse groups of animals on the planet. While it's difficult to quantify their exact percentage of total animal biomass on Earth, they are abundant in both marine and terrestrial environments, playing crucial roles in ecosystems.