Aquatic and Marine Biology

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.

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.

V. shiloi is infectious only during warm periods. Elevated temperature increases the virulence of V. shiloi, which then become able to adhere to a beta-galactoside-containing receptor in the surface mucus of the host coral.

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.

Limpet is a common name applied to aquatic snails with shells broadly conical in shape. Limpets are easily  found on rocky shores that are rich in algae. 

Geoducks are the longest-living organisms in the animal kingdom. The oldest recorded specimen was 168 years old but individuals over 100 years old are rare. Scientists speculate that the geoduck's longevity is the result of low wear and tear. A geoduck sucks water containing plankton down through its long siphon, filters this for food and ejects its refuse out through a separate hole in the siphon.

The California two-spot octopus (Octopus bimaculoides) is an octopus species found off the coast of California. One can identify the species by the circular blue eyespots on each side of its head. Due to their friendly temperament and relative hardiness, they are considered by most experts to make the best pet octopus.

Prawn is an arthropod, specifically a crustacean, characterized by jointed appendages and an exoskeleton. Chiton, Pila, and Unio are all molluscs.

Pisces (fish) are generally oviparous, meaning they lay eggs that hatch outside the mother's body. While some fish are ovoviviparous, oviparous is the standard classification for the group.