NationWide Specialist Laboratory have put together profiles of thyroid tests specifically for the greyhound breed. 1  Greyhound Thyroid Investigation (GTH1) â Sensitive TT4, TT3, TSH and TGAA. 2  Greyhound Thyroid Monitoring (GTH2) â Sensitive TT4, TT3 and Canine TSH.
Benthos in the intertidal zone include sea stars, barnacles, mussels, sea anemones, sea urchins, snails, and other creatures that attach themselves to the rocky substrate or burrow in the sand. Benthos in deeper zones include fish, crustaceans and tube worms.
Sea stars, commonly called, starfish, are not fish. There are approximately 2,000 species of sea star, all of which live in marine waters. Sea stars live underwater, but that is where their resemblance to fish ends. They do not have gills, scales, or fins.lso, sea stars move by using tiny tube feet located on the underside of their bodies. Adult sunflower sea stars can move at the astonishing speed of one meter per minute using 15,000 tube feet. Tube feet also help sea stars hold their prey.