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.
Check the recommended cure time on the mortar packaging and follow that. It varies depending on the type. I generally wait 36-48 hours to apply the grout afterward (I am cautious, that is far more time than is generally needed). â James Jul 14 '14 at 17:54. Better to give it time and make a trip to the laundromat than to ruin what looks like a nice tile job by being in a hurry. Nothing like a trip to the laundromat to make you more fully appreciate not having to go there all the time. I'd want to aim for a week's cure before putting in anything that heavy.