You just found a 25 lbs. (23 kg) davenport anchor and can't figure out how you can get this prize back to the surface. You need a lift bag!
You never know what you're going to find on a dive that is worth money, so always pack a lift bag when you go diving. The XS Scuba Standard 50 lbs. (23 kg) Lift bag is a traditional open bottom design. The lift bag is manufactured from durable and heavy-duty PVC and is bright orange in color for easy identification on the surface. The lift bag rolls-up to a compact size and can be stowed in a full-sized BCD pocket.
The lift bag measures 20" x 20" (50.8 x 50.8 cm) has nylon webbing lift straps with a 316-grade stainless-steel 4" (10.2 cm) spring loaded bolt clip for easy attachment.