31. Sea cucumbers were important commercial product produced in the province.32. These sands have been colonized by, among others, sea cucumbers . 33. Sea cucumbers are marine invertebrates and are closely related to sea urchins and starfish.34. Other creatures in this group are urchins and sea cucumbers . 35. One of the main economic activities on the island is the sea cucumber fishery. 36. Related animals include other sea urchins, sea cucumbers , and starfish. 37. It has been observed to cause skin ulcer syndrome in juvenile cultivated sea cucumbers . 38. The biggest problem today is the illegal fishing of pepino de mar or sea cucumbers . 39. Sea cucumbers were exported from the province and were an important factor in its economy.40. Certainly, complicated nervous machinery is not needed for concourse with jellyfish, sea cucumbers and sponges.
