 
 <prompt> Wetin dey benefit from gettin more yolk? Based on di last question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: However, di lifecycles of most living polychaetes, wey be almost all marine animals, dey unknown, and only about 25% of di 300+ species wey lifecycles dey known follow dis pattern. About 14% dey use similar external fertilization but dem dey produce yolk-rich eggs, wey reduce di time wey di larva need to spend among di plankton, or eggs from which miniature adults dey come out instead of larvae. Di rest dey care for di fertilized eggs until dem hatch – some dey produce jelly-covered masses of eggs wey dem dey tend, some dey attach di eggs to their bodies and a few species dey keep di eggs inside their bodies until dem hatch. Dis species dey use different methods for sperm transfer; for example, for some di females dey collect sperm wey males release into di water, while for others di males get penis wey dem use inject sperm into di female. E no get guarantee say dis na representative sample of polychaetes' reproductive patterns, and e simply reflect scientists' current knowledge. 