H. pylori can also spread through contact with contaminated water or food. The bacteria are believed to cause stomach problems when they penetrate the stomachâs mucous lining and generate substances that neutralize stomach acids. This makes the stomach cells more vulnerable to the harsh acids.. pylori can also spread through contact with contaminated water or food. The bacteria are believed to cause stomach problems when they penetrate the stomachâs mucous lining and generate substances that neutralize stomach acids. This makes the stomach cells more vulnerable to the harsh acids.
Food Preferences & Resources. Beluga whales are opportunistic feeders. They prey on about 100 different kinds of primarily bottom-dwelling animals. They eat octopus; squid; crabs; snails; sandworms; and fishes such as capelin, cod, herring, smelt, and flounder.
Gray Whales feed on herring eggs and larvae that they find in the grass beds that eels use in the summer and spring. This is the only species of whale that consumes food by straining the sediment that is found along the floor of the sea or ocean. They have been observed rolling around on their sides after they dive to the bottom of the water.