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Scuba diving tourism is a growth industry, and it is necessary to consider environmental sustainability, as the expanding impact of divers can adversely affect the marine environment in several ways, and the impact also depends on the specific environment. Tropical coral reefs are more easily damaged by poor diving skills than some temperate ...
Population densities continue to increase in the invaded areas, resulting in a population boom of up to 700% in some areas between 2004 and 2008. [4] [54] Pterois species are known for devouring many other aquarium fishes, [48] unusual in that they are among the few fish species to successfully establish populations in open marine systems. [55]
The Bahamas and Trinidad and Tobago are expected to be the most affected because at least 80% of the total land is below the sea level. [ 6 ] [ 7 ] Coastal losses range between US$940 million to $1.2 billion in the 22 largest coastal cities in Latin America and the Caribbean. [ 24 ]
Researchers have observed an unusual number of dead baby sea lions on islands off the California coast. Experts are testing for pathogens. Dead baby sea lions showing up along California coastal ...
Sea lions can act aggressively and deliver substantial bites to people if provoked, NOAA spokeswoman Sharon Melin told The Bee in 2022. NOAA recommends maintaining a distance of 50 yards from sea ...
Mnemiopsis leidyi, a species of comb jellyfish that spread so it now inhabits estuaries in many parts of the world, was first introduced in 1982, and thought to have been transported to the Black Sea in a ship's ballast water. The population of the jellyfish grew exponentially and, by 1988, it was wreaking havoc upon the local fishing industry.
A male California sea lion weighs on average about 300 kg (660 lb) and is about 2.4 m (8 ft) long, while the female sea lion weighs 100 kg (220 lb) and is 1.8 m (6 ft) long. The largest sea lions are Steller's sea lions , which can weigh 1,000 kg (2,200 lb) and grow to a length of 3.0 m (10 ft).
Hauling out is a behaviour associated with pinnipeds (true seals, sea lions, fur seals and walruses) temporarily leaving the water. [1] [2] Hauling-out typically occurs between periods of foraging activity. [1] [3] [4] Rather than remain in the water, pinnipeds haul out onto land or sea ice for reasons such as reproduction and rest.