Aquatic and Marine Biology

Cartilaginous fish, such as sharks, retain high concentrations of urea in their blood. This helps them maintain osmotic balance with the surrounding seawater.

A fry is the term used for a young fish that has recently hatched from an egg and is beginning to feed independently.

Fingerlings are young fish that have grown to the size of a human finger. This stage follows the fry stage in the development of many fish species.

Mosquito fish (Gambusia affinis) are well-known for their diet, which consists largely of mosquito larvae. They are often introduced into water bodies specifically for biological mosquito control.

The European eel is famous for its long-distance migration from European rivers to the Sargasso Sea to spawn. This is a well-documented biological phenomenon.

Curios is kept in museum. Curios is kept in museum

Snare is used to capture animals, hook is used to catch fish

The relationship shows the characteristic covering of living creatures. The characteristic covering of man would is skin.

Pisces have a three-chambered heart.Pisces is a Class in the Subphylum Vertebrata of the Phylum Chordata.

Fish have a closed-loop circulatory system. The heart pumps the blood in a single loop throughout the body.

Cultivation of oysters is done for pearls.

Common carps are bottom feeders.

Pillar coral  is a hard coral. It is a digitate coral, i.e. it resembles fingers or a cluster of cigars, growing up from the sea floor without any secondary branching. It is large and can grow on both flat and sloping surfaces at depths.

Squid are cephalopods.They have a distinct head, bilateral symmetry, a mantle, and arms. Squid, like cuttlefish, have eight arms arranged in pairs and two, usually longer, tentacles. Squid are strong swimmers and certain species can "fly" for short distances out of the water.

A nudibranch is a member of Nudibranchia, a group of soft-bodied, marine gastropod mollusks, which shed their shell after their larval stage. They are noted for their often extraordinary colours and striking forms.