Did you know that snails are gastropod mollusks that have shells and those without shells are known as slugs? Concerning the number of their species, sea snails are noticeably overtaken by their land-living relatives (about 25,000 of 45,000 known gastropod species are terrestrial ones), but nevertheless there are many different forms of gastropods in the sea; sometimes it is hard to see, how they are related to terrestrial snails. Snails are truly versatile creatures and it’s no surprise considering the wide variety of the species.

Edible molluscs are harvested from saltwater, freshwater, and the land, and include numerous members of the classes Gastropoda (snails), Bivalvia (clams, scallops, oysters etc. Your garden provides a home for many creatures. In fact, there are over 4000 snail species that also includes different kinds of sea snails and freshwater snails.

A to Z - Sea Slugs & Sea Snails. Identify Snails and Slugs.

Though not everyone’s favourites, especially gardeners, you can easily find a variety of snails and slugs munching on your home’s plants. The name snail is most often applied to land snails, however, there are many different types of snails. There are an estimated 43,000 different gastropod species on this planet, on land, in freshwater, and in the sea. Found singly or in pairs amongst rubble and sand areas of coral and rocky reefs. However, a snail can increase the size of its shell especially the species found in sea water.

Snails are food for a number of animals (fish, crabs, other snails, birds, humans) and herbaceous (plant-eating) snail species can help remove algae and reduce plant detritus (dead matter). Also known … They have about 43,000 species categorized into land snails, sea snails, and freshwater snails. Apple Snails.

Although families such as the cowries, cone snails and murex snails may be the best known due to their attractive shells and often bright colours, large numbers of ecologically important species are either drab, or small to microscopic in size. To do this, the sea water must contain rich concentration of calcium carbonate.

), Cephalopoda (octopus and squid), and Polyplacophora (chitons). Marine snails form the dominant component of molluscan faunas throughout the world’s oceans.

Sea Snails and Slugs. Also known as Arminid Nudibranch, Nudibranch, Ridged Dermatobranchus. You are now viewing the A-Z restricted to only Sea Slugs & Sea Snails. Whelk is a common name that is applied to various kinds of sea snail. Some sea snails do eat meat, though, like fish and even other snails. (Read: 6 Different Types of Snails (Plus Interesting Facts) in Animals. 6 Different Types of Snails (Plus Interesting Facts) Snails are mollusks that belong to the Gastropoda class.

Length - 3cm Depth.. more Read more Alyta Nudibranch - Sea Slugs .

Albus Nudibranch - Sea Slugs . They have anywhere from just a few teeth to thousands attached to a ribbon-like part of their mouths. Here, we’ll tell you how to know your Helix aspersa from your Achatina, and which will give your escargot a bit more go-go. Most sea snails have a lid attached to the snail’s foot that shuts off the shell when they withdraw, an advantage for land snails to be jealous of. Their discarded shells provide protection and habitat for other animals and are prized by shell collectors worldwide.

The common whelk and other sea snails have evolved a survival defence different from land snails – they can shut the door.

Depending on their habitat and species, snails can survive about one to three years or even up to 25 years.

Although a number of whelks are relatively large and are in the family Buccinidae (the true whelks), the word whelk is also applied to some other marine gastropod species within several families of sea snails that are not very closely related.. Types of Freshwater Snails. Here are the different types of freshwater snails. Molluscs are a large phylum of invertebrate animals, many of which have shells.