Marina Decor Caves are natural-looking polyresin replicas of underwater caverns. The cavernous structures provide secure areas for hiding and swimming. They are also an excellent way of creating beautiful, natural-looking rocky landscapes. The Decor caves are grey with white and green highlights and include one life-like amazon sword plastic plant for added realism. Made of non-toxic materials, the caves will not affect water chemistry or clarity. Size: 10.5 x 15.5 x 12.5 cm (4.2 x 6 x 5 in) Other sizes available: - 12057 Marina Polyresin Decor Cave Ornament, 15.5 x 22.5 x 16.5 cm (6 x 8.8 x 6.5 in) - 12058 Marina Polyresin Decor Cave Ornament, 13 x 29 x 19.5 cm (5.1 x 11.4 x 7.7 in)