Tugboats

Today's featured subject is Tugboats. Here is a list of all the tugboats in the website:

Tugboats






Type:
shipwreck, tugboat, USA
Built:
1885, USA
Specs:
( 55 ft )
Sunk:
autumn 1973; foundered - no casualties
Depth:
100 ft


An invertebrate is any multicellular animal lacking a backbone. This includes all animal phyla other than Chordata. The major invertebrate phyla include:

  • Sponges - Porifera
  • Coelenterates - Cnidaria
  • Ctenophores - Ctenophora
  • Echinoderms - Echinodermata
  • Flatworms - Platyhelminthes
  • Roundworms - Nematoda
  • Segmented worms - Annelida
  • Mollusks - Mollusca
  • Arthropods - Arthropoda

Invertebrates are tremendously diverse, ranging from microscopic wormlike mezozoans to huge animals such as the giant squid. Approximately 95% of all the earth's animal species are invertebrates; of these, the vast majority are insects and other arthropods. Invertebrates are important as parasites and are essential elements of all ecological communities.