Grunion until the next tide series high enough reaches them 10 or more days later. Grunion eggs can extend incubation and delay hatching if tides do not reach them for an additional four weeks after this initial hatching time. Most of the eggs will hatch in 10 days if provided with seawater and the agitation of the rising surf. The mechanical action of the waves is the environmental trigger for hatching. The rapidity of hatching, which occurs in less than one minute, indicates it is probably not an enzymatic function of a softening of the chorion as in some other fishes.
Creature Catalogue of the player characters, originally printed in the Master Set, is reproduced in the introduction. Each creature is listed with appropriate "D&D" statistics and a short description of the creature, its abilities and tactics. A variety of authors and artists combined to the listings including Zeb Cook and Gary Gygax. AC9 "Creature Catalogue" was compiled by Graeme Morris, Phil Gallagher, and Jim Bambra, and was published by TSR in 1986. The "Creature Catalogue" is in the format of a 96-page perfect-bound book, which TSR had been adopting more frequently at the time. Cover art is by Keith Parkinson. An updated