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She will remain with the developing young until they hatch, but will not eat. After
the young hatch and join the plankton, the female will go off by herself and die.
Animals other than invertebrates also make their homes on the kelp plants. A
The young develop within the protective case, nourished by a yolk sac, hatching
when ready to fend for themselves. This reproductive method — depositing an
egg outside the body where the young are nourished by a yolk — is called ...
The egg sac of a skate is called a "mermaid's purse" because of its resemblance
to a woman's handbag. Rays' eggs hatch within the female's body, and rays are
born fully functional. Inside this skate egg, or "mermaid's purse, " are one or more
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I purchased all three books in this set and taught a short course to a small group of high school kids. We had a great time with this course! We did 10 experiments and held very intense all-day ... Read full review