The shell is just that; a shell. Non living material, made of i believe chiton.
Horseshoe crab
it uses its very hard shell
Organisms that can penetrate the shell of the horseshoe crab include certain species of predatory sea stars, gastropods like moon snails, and some types of crabs. These predators have specialized adaptations, such as strong beaks or appendages, that enable them to break through the horseshoe crab's tough exoskeleton. Additionally, some parasitic organisms, like certain types of barnacles and flatworms, can also invade the horseshoe crab's body.
Mangrove horseshoe crab was created in 1802.
Atlantic horseshoe crab was created in 1758.
fiddler crab, lobster, crayfish, horseshoe crab, spider crab, hermit crab, barnalcles, mole crab, mosqitos
I was just looking for this too. I believe you may be thinking of a horseshoe crab, it has a long tail like the stingray and has a shell.
The horseshoe crab closely relates to scorpions and spiders.
The horseshoe crab is about 2 feet long and weighs 10 pounds.
The spikes on a horseshoe crab protect it from being attacked.
a horseshoe crab is called a horshoe crab because its sell looks like the shape of a horseshoe posted byb Sean I
Horseshoe crabs are not a fish, it is a marine arthropod. The horseshoe crab is more closely related to spiders, ticks, and scorpions than to crabs.