Yes, there have been reported sightings of sharks in the Sea of Marmara. The most commonly spotted species is the spiny dogfish shark, which is known to inhabit the waters of the Sea of Marmara. However, the presence of sharks in this sea is not very common, and encounters with them are rare. Despite this, it is important for swimmers and divers to be aware of the potential presence of sharks and to take necessary precautions while in the water. **

Investing in modern Pokémon cards can be worth it for some collectors and investors. The value of certain cards can appreciate over time, especially if they are rare or in high demand. However, it is important to research and understand the market trends before making any investments. Additionally, investing in Pokémon cards should be done out of passion for the hobby rather than solely for financial gain. **

Stock dividends are additional shares of a company's stock that are distributed to existing shareholders as a form of dividend payment. Instead of receiving cash, shareholders receive more shares of the company's stock. This can be a way for a company to reward its shareholders without using cash, and it can also help to increase the number of shares outstanding. Stock dividends are typically expressed as a percentage, such as a 5% stock dividend, which means that for every 100 shares owned, the shareholder would receive an additional 5 shares. **

Yes, it can be worth investing in a stock portfolio with small amounts of money. Even small investments can grow over time through the power of compounding. Additionally, investing in a diversified portfolio of stocks can help spread risk and potentially provide better returns compared to keeping money in a savings account. With the accessibility of low-cost investment platforms and fractional shares, it is easier than ever to start investing with small amounts of money. However, it's important to do thorough research and consider the potential risks before investing. **

Market shares represent the percentage of total sales in a specific industry that a company holds. It is a measure of a company's competitiveness and its position relative to its competitors in the market. Market shares can be calculated based on revenue, units sold, or any other relevant metric. Companies with higher market shares typically have a larger influence on industry trends and are considered market leaders. **

In Islamic finance, stock trading is considered haram (forbidden) by some scholars due to the involvement of uncertainty (gharar) and speculation (maysir), which are prohibited in Islam. However, others argue that stock trading can be permissible if certain conditions are met, such as investing in Sharia-compliant companies and avoiding businesses that deal with haram activities like alcohol, gambling, or pork. Ultimately, it is recommended for individuals to seek guidance from knowledgeable scholars to ensure their investments align with Islamic principles. **

Stock trading can be considered a hobby for some individuals who enjoy researching and analyzing the stock market, making trades, and potentially earning profits. However, for others, stock trading is a serious financial activity that requires a significant amount of time, effort, and knowledge to be successful. Ultimately, whether stock trading is a hobby or not depends on the individual's level of interest, commitment, and purpose for engaging in the activity. **

Trading in commodities of daily necessities is not prohibited in the stock market because these commodities are essential for daily life and play a crucial role in the economy. Allowing trading in these commodities helps to ensure a fair and efficient market for these goods, allowing for price discovery and risk management. Additionally, it provides opportunities for producers and consumers to hedge against price fluctuations and manage their exposure to these essential goods. Overall, allowing trading in commodities of daily necessities in the stock market helps to facilitate the smooth functioning of the economy. **