The Alphabet Cone Shell

Lamarck - Conus Plate 318
Image by WikiMechanics via Flickr

Cone shells are fairly small shells that are shaped like – can you imagine? – a cone.  Think of a pointed ice cream cone – a sugar cone – without an opening for the ice cream.  Instead you will see a tight, fairly flattened spiral.

They can be found all along the coast of Florida and over to Mexico. Other types of cone shells can be found in tropical waters from the Carolinas to the Indian and western Pacific oceans. The mollusk uses poison to kill it’s prey and in the larger species it can be fatal. Always be careful when handling live cones, although here in the US we don’t have the large ones.

The outside of the Alphabet cone (Conus spurius atlanticus)- scroll down the page at FloridaSheller.com to see his collection – is smooth with reddish brown or orange to yellow spots in irregular shapes.  These shells are not exceptionally large and only grow to about 3 inches (7.6 cm) long, but they have the most interesting patterns on the outside of the shell.  In fact there is a man who has collected the “alphabet” in cones – read about him here.

The Red Abalone

The iridescent inside surface of a red abalone...
Image via Wikipedia

Abalones live where the rocks are, near shore or sometimes in quite deep water, and move around on a large, muscular foot.  This is the best reason I can think of for not finding them in Florida – not many rocks.  I’ve never seen one here, nor are they mentioned in my seashell ID book.

They are collected to use as food and of course the shell is used for it’s ornamental value.

The Red Abalone (Haliotis rufescens) is the largest of the species growing to 12 inches (30.5cm) long.  The outer shell is dark, brick red and the inside has a beautiful iridescence.

The Abalone is prone to Withering disease that causes it to eat itself which causes the muscular foot they use to hold onto rocks, to wither, which in turn causes them to fall off and eventually starve to death, unless a predator gets them first.

The Abalone Shell Family

abalone
Image by artolog via Flickr

Probably you have heard of, or own, abalone jewelry and it comes from the large Abalone shell.

Abalones have an iridescent shell (inside) that is collected to use for making jewelry and other things.  Because they are much sought after for these uses, certain species have been greatly depleted.

The single characteristic of the Abalone shell that stands out most prominently when collecting shells, would be the row of holes along one edge of the bowl shaped shell.

Many can be found along the Pacific area of North America, including the largest species, but this mollusk is also abundant around Australia and New Zealand and in western tropical areas of the Pacific.