Part 18

Foraminifera, 15.

Fresh-water pearl, 98.

Fungia, 51.

Fusus, 111.

Gall crab, 152.

Gammarus, 138.

Garden Key, 44.

Garden of the Gods, 227.

Gecarcinus, 146.

Giant clam, 98.

Giant octopus, 123.

Giant squid, 114, 118.

Glacier flea, 178.

Glass-bottom boat, 50.

Glass sponge, 23.

Gnat, 210.

Goat moth, 221.

Goniaster, 61.

Gordius, 75.

Gorgonia, 49, 53.

Grapsus, 124, 147.

Grasshopper, 190.

Green crab, 149.

Gulf of Mexico, 33.

Gunther, 158.

Haliotis, 109.

Halobates, 201.

Helderberg, 53.