The term "marine invertebrates" is used to describe animals found in a marine environment which are invertebrates: lacking a notochord. In order to protect themselves, they may have evolved a shell or a hard exoskeleton, but this is not always the case.

As on land and in the air, invertebrates make up a huge portion of all life in the sea. Invertebrate sea life includes:

Bryozoa, also known as moss animals or sea mats;
Cnidaria, such as jellyfish, sea anemones and corals;
Crustaceans, such a such as lobsters, crabs, shrimp, crayfish and barnacles;
Ctenophora: sea worms including flatworms, ribbon worms, annelids, Sipuncula, Echiura, Chaetognatha, and the phoronids;
Echinoderms, including starfish, brittle stars, sea urchins, sand dollars, sea cucumbers, and crinoids;
Mollusca, including shellfish, squid, octopus;
Sponges;
Tunicates, also known as sea squirts.

Marine Inverts

Anemones Cephalopods Fan Worms 4 Products Lobsters Marine Crabs 1 Products Marine Snails 2 Products Nudibranches Oysters Scallops Sea Cucumber Sea Urchins Shrimp 1 Products Sponges Starfish 4 Products Tridacna Clams Tunicates (Sea Squirt) Sort by: Product Price Default Result pages: 1 2   See details Algae Eating Hermit Crabs Crab Reef Safe The Dwarf Yellow Tip Hermit Crab is one of the more uniquely colored members of the Diogenidae family. The bright yellow bands on its green to black legs add a pop of color to this member of your aquarium's reef-safe cleanup crew. Like its Blue Leg and Red Tip cousins, the Dwarf Yellow Tip Hermit... Our price: £0.99 Quantity 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 Buy Now Add to wish list See details Banded Serpent Sea Star The Serpent Sea Star of the genus Ophioderma has a central, 5-sided disc with five banded, scaly arms. Depending upon the species and locale, the color can range from maroon, to orange, to green. The central disc can also have variable markings. It does well in an aquarium if provided with... Our price: £8.99 Quantity 1 2 3 4 5 6 Buy Now Add to wish list See details Boxing Shrimp The Boxing Shrimp catches the eyes of most aquarists with their beautiful coloration and body shape. It has striking red and white bands across its body with fairly long pinchers and extra long white antennae. Combined with its prickly body texture, this peaceful member of the Stenopodidae family... Our price: £12.99 Quantity 1 2 3 Buy Now Add to wish list See details Brittle Sea Star The Brittle Star originates from the reefs of Tonga, and is a great scavenger for the marine aquarium. The central disc is brown to green in color and may exhibit dark patterns. The legs are long and are banded with light and dark brown coloration. The legs also have many spines that aid the star... Our price: £12.99 Quantity 1 2 3 4 5 6 7 8 9 10 Buy Now Add to wish list See details Bumble Bee Snail The tiny Bumble Bee Snail benefits most marine reef aquariums in big ways. Heralded for their small size and beautiful coloration, Engina sp. can get into small crevices and tight locations between rockwork. Here, they clean away detritus, including uneaten meaty foods and decomposing organisms. ... Market price: £3.99 Our price: £2.50 save 37% Quantity 1 2 3 Buy Now Add to wish list See details Chocolate Chip Starfish The Chocolate Chip Starfish has a thick, brown body with multiple dark brown tubercles extending upward along each of its five arms to give the appearence of chocolate chips. It is found in shallow tidal pools and up to 100' deep reefs in the Indian Ocean. The Chocolate Chip Starfish requi... Our price: £8.99 Quantity 1 Buy Now Add to wish list See details Christmas Tree Worm The Christmas Tree Worm, or Jewel Stone, was first described by scientists in 1766. Its crown comes in a variety of different colors, but is always paired. Usually, just the crown, which is spiraled in the shape of a Christmas tree, is seen; its body is hidden within the host coral. It has an ope... Our price: £34.99 Quantity 1 Buy Now Add to wish list See details Feather Duster The Feather Duster, also known as Giant Feather Duster, has a fan-shaped crown (radiole) that is tan or orange with brown band colorations. The radiole of some species from certain locales may be up to 7 inches in diameter, or of brighter colors. The Feather Duster uses the radiole to filt... Our price: £9.99 Quantity 1 2 3 4 5 6 7 8 9 Buy Now Add to wish list See details Pink Feather Duster Worm The Dwarf Colored Feather Duster is exquisite in both form and shape. Its fan-shaped radiole is a gorgeous pink, white, or yellow color that dresses any aquarium. Because it will grow only up to 4", this species of Bispira is suited for any sized aquarium. Like other members of the Sabelli... Our price: £7.99 Quantity 1 2 3 4 5 Buy Now Add to wish list See details Red Hard Tube Coco Worm The Hard Tube Coco Worm, also known as the Hard Tube Feather Duster, Protula Tubeworm, or Hard Tubeworm, has a crown that can be white, yellow, orange, pink, or red. The radioles may be banded or patterned. Younger Hard Tube Coco Worms have bi-lobed crowns, while the crowns of older individuals a... Our price: £19.99 Quantity 1 2 3 4 5 6 7 Buy Now Add to wish list

Result pages:

1

2