Tonna shell. This shell holds water. It is great for flower arrangements, and for decoration. Has a lot of look for not a lot of money. Availability: Usually ships in 3-4 business days. TONNA OLEARIUM TONA$22.006-8: inchesplus TONNA OLEARIUM Tonna shell. This shell holds water. It is great for flower arrangements, and for decoration. Has a lot of look for not a lot of money. Availability: Usually ships in 3-4 business days. TONNA OLEARIUM TONA$22.006-8: inchesplus