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.
Comments. Submit. A limited number of plants can live in the benthic zone at the bottom of the ocean. The majority of plants can only live in water that's shallow enough to let in sunlight, which they require for photosynthesis, the process by which plants produce nutrients.omments. Submit. A limited number of plants can live in the benthic zone at the bottom of the ocean. The majority of plants can only live in water that's shallow enough to let in sunlight, which they require for photosynthesis, the process by which plants produce nutrients.