larva

Image of a zebrafish larva from (NHGRI Press Photos). Calcium is very important for the normal development, growth and survival of most vertebrates. Therefore, regulation of calcium intake and disposal is well-controlled. Mammals obtain most of their calcium from the diet, whereas fish obtain calcium by absorbing it from the external environment. For adults, this occurs in the gills and for larvae it is absorbed through the skin. What this means is that fish living in low calcium environments can acclimate by increasing the absorption of calcium from the water. Dr. Kwong (Dept. of Biology…
Lycaena xanthoides - Great Copper California A butterfly larva peeks through a hole it has eaten in its Rumex host plant.