Opportunistic feeders, their diet varies from one region to another. In the Antarctic, killer whales eat about 67% fishes, 27% marine mammals, and 6% squids. Killer whales in the Bering Sea (near Alaska) eat about 65% fishes, 20% squids, and 15% marine mammals.
Even though your shower grout looks dry, using it too early or sealing it before it's ready may damage it, leading to premature failure. Most cement-based grouts require a cure time of 48 to 72 hours before applying a penetrating sealer.
Time Before Grouting. Drying time varies with ambient air temperature, humidity and moisture content of the mortar when applied. In general, mortar must set at least 24 to 48 hours before grouting. Apply mortar when the ambient air temperature is between 50 and 100 degrees Fahrenheit. Ideally, temperatures should not exceed this range for at least 72 hours after application.