Acorn+Worm-+Balanoglossus+Apertus

they are affected by human activities such as reclamation and pollution. Trampling by careless visitors can also have an impact on local populations.
 * Common Name:** Acorn Worm
 * Scientific Name:** //Balanoglossus apertus//
 * Class:** Enteropneusta
 * Location:** they are found around the world on our shores, on sand bars, in sandy areas especially near seagrasses
 * Size:** 9cm to 2m
 * Description of Habitat:** Typically found in intertidal or shallow marine areas, but occasionally in deeper water in burrows on the sea land
 * Living Requirements:** They eat bacteria, diatoms, microalgae, sand, and mud
 * Life Cycle of Animal:** The eggs hatch, the larvea eats for about 10 days, after they grow they crawl and fall in the ground, once they dig in to the ground they change to a pupal, adults emerge from the ground after 25 days.
 * Male and Female Differences:** No differences in appearance just differences in reproductive parts
 * Interesting Facts**
 * 1.** The acorn worm's skin is densely covered with cilia (tiny hairs) and glands which secrete a mucus that covers the body that gives them a medicinal smell and might protect them from bacteria and predators.
 * 2.** Acorn worms are related to vertebrates but they dont have vertebral bones just a notochord
 * Threatened or Endangered?** Not threatened or endangered
 * Human Impact on Organism:**
 * Sources:**
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 * Zookeeper: Jessica Tolliver**