Whale Shark The Worlds Biggest Fish

The whale shark is found in tropical and warm oceans and lives in the open sea with a lifespan of about 70 years.The whale shark, Rhincodon typus, is a slow-moving filter feeding shark and the largest extant fish species.

The largest confirmed individual had a length of 12.65 metres (41.50 ft) and a weight of more than 21.5 tonnes (47,000 lb)

The whale shark is a filter feeder – one of only three known filter feeding shark species (along with the basking shark and the megamouth shark). It feeds on macro-algae, plankton, krill, Christmas Island red crab larvae,^[11] and small nektonic life such as small squid or vertebrates.

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Giant 40-foot Whaleshark Caught

Glaucus Atlanticus, Fantasy Slug

Glaucus atlanticus
Forster, 1777

Order:NUDIBRANCHIA
Suborder:AEOLIDINA
Family:Glaucidae

Distribution and habitat

This nudibranch is pelagic, and is distributed throughout the world's oceans, in temperate and tropical waters. Regions where this slug is found include the East and South Coast of South Africa, European waters, the east coast of Australia and Mozambique.^[5] This species floats upside down on the surface tension of the ocean.

With the aid of a gas-filled sac in its stomach, Glaucus atlanticus floats at the surface. Due to the location of the gas sac the sea swallow floats upside down. The dorsal surface, actually the foot and underside, has either a blue or blue-white coloration. The true dorsal surface is completely silver-grey. This coloration is an example of counter shading, which helps protect it from predators from below, sides and above.

Glaucus is, like most sea slugs, a hermaphrodite, containing both male and female reproductive organs. Unlike most nudibranchs, which mate with their right sides facing, sea swallows mate with ventral sides facing.^[7] After mating, both animals produce egg strings.

Dorsal surface, which faces downward as animal floats upside down on the surface of the ocean (Pleuston). This is the smaller of two similar pleustonic species which are blown ashore during periods of strong onshore winds.

Feeding on the "By-the-wind sailor" (Velella velella). Also feeds on the Portuguese man-o'-war, commonly
known as the Bluebottle (Physalia physalis) and, below, on Porpita porpita.

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Mating sequence shown below

G. atlanticus is able to feed on P. physalis due to its immunity to the venomous nematocysts. The slug consumes the entire organism and appears to select and store the most venomous nematocysts for its own use. The venom is collected in specialized sacs (cnidosacs), on the tip of their cerata, the thin feather-like "fingers" on its body.^[6] Because Glaucus stores the venom, it can produce a more powerful and deadly sting than the Man o' War upon which it feeds.

man o war, a very poisonous jellyfish

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Ship Data

Built In: 2006
Passenger Capacity: 3780(total beds)
Number of Crew: 1100
Total Cabins: 1500 (28 for Handicapped Guests)
Tonnage: 114500t
Length: 290 m
Width 35.5 m
Decks: 17 (14 for guest use)
Max Speed: 23 knots
Cruising Speed: 21.5 knots

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Unfortunately

It is Not an Alien, is a Crab!