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.
How long does it take for grout to set? A: Grout must set for 15 to 30 minutes before it is wiped for the first time and another 3 hours before it is wiped a second time, according to BobVila.com. In both stages, the grout should be wiped with a wet sponge to remove excess grout on the tile.