Collagen is the principal constituent of the fiber-network layer of our skin. More than a third of the body's protein is collagen, and it can account for an even higher percentage in particular parts of the body. Collagen makes up 70% of our skin tissue.
Sea lice are parasites of the Caligidae family of arthropods and are among the most notorious pests affecting cultured marine fish.They have a particularly large impact upon salmonid fish production.ea lice on a salmon. (Wikimedia Commons). Sea lice are parasites of the Caligidae family of arthropods and are among the most notorious pests affecting cultured marine fish. They have a particularly large impact upon salmonid fish production.
The phoronids, bryozoans, and brachiopods are all filter-feeders that share a ciliated feeding organ called a lophophore. Mollusks are a large and diverse group of animals; familiar mollusks include snails, clams, squids, and octopuses.hyla placed in this group include: Phylum Rhynchocoela or Nemertea: Proboscis worms with a long, stick-like proboscis or evert that can be withdrawn by turning it inside out. Phylum Rotifera: Rotifers, with a wheel-like crown of cilia at one end.