Main Pages:
The main pages of this guide are located along the left margin of the page.  Clicking any of these pages will bring you to a Contents page.  For example, clicking the Vertebrates main page brings you to a listing of the vertebrate contents, including birds, fishes, mammals, etc. 

Contents Pages:
On the Contents pages, listings of Indian River Lagoon species featured in this guide are easily located by clicking the group names.  Many of the groups listed in the Contents pages also have sketches that show anatomical features of  the organisms described.  These sketches are accessed by clicking the thumbnail photos on the Contents pages.  Sketches will be especially helpful in the Invertebrates pages, where readers may not necessarily be familiar with anatomical traits used to identify and differentiate organisms.   

Group Pages:
The Group pages are located under the Contents pages and show the listing of Indian River Lagoon species featured in this guide.  To view a photo of any particular species, simply click the thumbnail photos.  To view the species description, which also includes information on relevant habitat, range, and similarity to other species, click the highlighted species names. 

Species Pages:
The Species pages contain descriptions, identifying photos, habitat, and range information.  Many Species pages also have links to the more detailed species information posted on the Indian River Lagoon Species Inventory website (www.sms.si.edu/irlspec/index.htm).  Information on the IRL Species Inventory site is much wider in scope and contains information on habitat and distribution, life history, population biology, community ecology, physical tolerances, reproduction, and other biologically pertinent information. 
 

Symbols used throughout the guide:
We have included a number of visual cues to indicate that a species is particularly relevant in the Indian River Lagoon.   These symbols are used throughout the guide and indicates the following: