How to use in-sentence of “on the sea”:
+ In addition to swimming near the bottom, the Nurse shark can move around on the sea floor, using its flexible, muscular pectoral fins as limbs.
+ This is mainly formed by “Melobesia”, a small red alga which lives on the sea grass.
+ The larva swims for a short time and then attaches itself to something on the sea floor, like a rock, transforming into its adult form.
+ Mary Anning is the subject of the old tongue-twister, “She sells sea shells on the sea shore.” – “Their shop was such a feature of the area that Mary became the inspiration behind the well-known tongue-twister ‘She sells seashells on the seashore’.” – Natural History Museum It was composed in 1908, more than a half century after her death, by Terry Sullivan who was inspired by her life story.
+ These ornate, curved white eggcases are occasionally found floating on the sea surface, sometimes with the female argonaut still clinging to it.
+ The eight year old Costa Cruises vessel was on the first leg of a cruise around the Mediterranean Sea when she deviated from her planned route at the Isola del Giglio, sailed closer to the island, and struck a rock formation on the sea floor.

Example sentences of “on the sea”:
+ This giant cetacean eats small fish, crustaceans, squid, and other tiny organisms that it finds on the sea floor.
+ Their darker color helps them stay camouflaged, easily hiding in the sand or mud or on the sea floor.
+ The ships were on the sea for nearly two months when a severe storm that lasted for five days caused the ships to become separated.
+ They usually live on the sea floor.
+ Even though it is frozen in winter, boats can travel on the sea all year around because of the use of icebreakers.
+ Civil War, white planters on the Sea Islands were afraid of an invasion by US naval forces.
+ The large curved shell sat in the mud on the sea floor.
+ Men have fought battles on the sea for over 3,000 years.
+ Large silt loads are also carried out to sea, some of the silt being deposited as a nutrient rich layer on the sea floor, contributing to the muddy waters that characterise Kakadu’s coastline.
+ The countries that have borders with Colombia on the sea are: Nicaragua, Panama, Costa Rica, Guatemala, Honduras, Jamaica, Haiti and Dominican Republic.
+ The adults live mostly on the sea floor, in the littoral zone.
+ The Hawaiian Islands are the tops of really high volcanic islands that have formed over a hot spot on the sea floor.
+ When he was 49 years old, in 1845, and after 17 years in Siberia, Turczaninov went to live in Taganrog on the Sea of Azov near the Black Sea.
+ They search for their food by digging their snouts into the sand on the sea beds.
+ This giant cetacean eats small fish, crustaceans, squid, and other tiny organisms that it finds on the sea floor.
+ Their darker color helps them stay camouflaged, easily hiding in the sand or mud or on the sea floor.
