Aquaculture ~ sea cucumber farm, Rayner Nha Trang, Vietnam (2004). // Photo: Dominyk Lever / These are gathered for human consumption and some species are cultivated in aquaculture systems. Sea cucumbers serve a useful purpose in the marine ecosystem as they help recycle nutrients, breaking down detritus and other organic matter after which bacteria can continue the degradation process. //
Weedy Sea dragon (Phyllopteryx taeniolatus) Phyllopteryx taeniolatus, also known as the weedy seadragon or common seadragon, is a marine fish related to the seahorse. Adult weedy seadragons are a reddish colour, with yellow and purple markings; they have small leaf-like appendages that provide camouflage and a number of short spines for protection. Photographed at the Georgia Aquarium.