Yes. Tornadoes have formed on oceans and lakes (in whic case they are called waterspouts) and come onto land.
Yes. There have been many accounts of tornadoes crossing lakes and rivers, and sometimes moving into the ocean. If a tornado move onto water it is called a waterspout.
Fair weather (non tornadic) waterspouts usually dissipate once they hit land. A tornadic waterspout just continues on land as a regular tornado.
They mate in the ocean, and then the females come onto land and make sand nests and lay the eggs
Sea breezes come from the sea onto the land, and land breezes come from the land onto the sea.
it is called convection
All crabs are sea-dwellers. They can go onto land, but there are no land-based crabs.
A sea breeze is a type of breeze that blows from an ocean or lake onto land. It is caused by temperature differences between the water and the land, with the water staying cooler during the day and the land warming up faster.
sea breaze
Hurricanes that strike land weaken rapidly. If they re-emerge onto water they have the opportunity to restrengthen.
A tornado on the ocean, known as a waterspout, will lift some water into the air as a spray, but not in particularly large amounts. Fish and other marine life unfortunate enough to be at the surface may be lifted into the air as well. Waterspouts can pose a significant threat to boats.
A tornado is generally worse. Fair-weather waterspouts, the most common variety, typically have winds equivalent to an EF0 tornado. Even then it doesn't make much a difference, since these waterspouts usually stay over open water and never cause any damage, though they can pose a hazard to small boats. If a waterspout moves onto land and causes damage, it is counter as a tornado. There are exceptions, however. Tornadic waterspouts are ordinary tornadoes that just happen to be over water. If one moves onto land it will become a full-fledged tornado and can be just as damaging as a tornado that originates on land. One of the worst cases was the Sandusky/Lorain tornado of June 28, 1924. This F4 tornado spent some time as a waterspout on Sandusky Bay and later on Lake Erie. During its time on land it devastated the cities of Lorain and Sandusky, killing 85 people. This marks it as the deadliest tornado in Ohio history.
Tornadoes have touched down in California. Though "landfall" is not the correct temr unless it is a waterspout moving onto land.